Mark Brongersma

All Publications

• Study of Carrier Statistics in Uniaxially Strained Ge for a Low-Threshold Ge Laser IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS Nam, D., Sukhdeo, D. S., Gupta, S., Kang, J., Brongersma, M. L., Saraswat, K. C. 2014; 20 (4)

  View details for DOI 10.1109/JSTQE.2013.2293764

  View details for Web of Science ID 000330317900002

• CMOS Compatible High-speed Electro-optical Modulator Kekatpure, D., Brongersma, M., L.
• Light Trapping for Solar Fuel Generation with Mie Resonances NANO LETTERS Kim, S. J., Thomann, I., Park, J., Kang, J., Vasudev, A. P., Brongersma, M. L. 2014; 14 (3): 1446-1452

  Abstract

  The implementation of solar fuel generation as a clean, terawatt-scale energy source is critically dependent on the development of high-performance, inexpensive photocatalysts. Many candidate materials, including for example α-Fe2O3 (hematite), suffer from very poor charge transport with minority carrier diffusion lengths that are significantly shorter (nanometer scale) than the absorption depth of light (micrometer scale near the band edge). As a result, most of the photoexcited carriers recombine rather than participate in water-splitting reactions. For this reason, there is a tremendous opportunity for photon management. Plasmon-resonant nanostructures have been employed to effectively enhance light absorption in the near-surface region of photocatalysts, but this approach suffers from intrinsic optical losses in the metal. Here, we circumvent this issue by driving optical resonances in the active photocatalyst material itself. We illustrate that judiciously nanopatterned photocatalysts support optical Mie and guided resonances capable of substantially enhancing the photocarrier generation rate within 10-20 nm from the water/photocatalyst interface.

  View details for DOI 10.1021/nl404575e

  View details for Web of Science ID 000335720300054

  View details for PubMedID 24524658

• Hot-Electron Photodetection with a Plasmonic Nanostripe Antenna NANO LETTERS Chalabi, H., Schoen, D., Brongersma, M. L. 2014; 14 (3): 1374-1380

  Abstract

  Planar metal-oxide-metal structures can serve as photodetectors that do not rely on the usual electron-hole pair generation in a semiconductor. Instead, absorbed light in one of the metals can produce a current of hot electrons when the incident photon energy exceeds the oxide barrier energy. Despite the desirable traits of convenient fabrication and room-temperature operation at zero bias of this type of device, the low power conversion efficiency has limited its use. Here, we demonstrate the benefits of reshaping one of the metallic contacts into a plasmonic stripe antenna. We use measurements of the voltage-dependence, spectral-dependence, stripe-width dependence, and polarization-dependence of the photocurrent to show that surface plasmon excitations can result in a favorable redistribution in the electric fields in the stripe that enhances the photocurrent. We also provide a theoretical model that quantifies the spectral photocurrent in terms of the electrical and optical properties of the junction. This model provides an accurate estimate of the bias dependence of the external quantum efficiency of different devices and shows that both the spatial and vectorial properties of the electric field distribution are important to its operation.

  View details for DOI 10.1021/nl4044373

  View details for Web of Science ID 000335720300043

  View details for PubMedID 24502677

• Electrically driven subwavelength optical nanocircuits NATURE PHOTONICS Huang, K. C., Seo, M., Sarmiento, T., Huo, Y., Harris, J. S., Brongersma, M. L. 2014; 8 (3): 244-249

  View details for DOI 10.1038/NPHOTON.2014.2

  View details for Web of Science ID 000332221100017

• Chair Gordon Conference on Plasmonics Brongersma, M., L. 2014
• Electro-optical modulation of a silicon waveguide with an "epsilon-near-zero" material OPTICS EXPRESS Vasudev, A. P., Kang, J., Park, J., Liu, X., Brongersma, M. L. 2013; 21 (22): 26387-26397

  Abstract

  Accumulating electrons in transparent conductive oxides such as indium tin oxide (ITO) can induce an "epsilon-near-zero" (ENZ) in the spectral region near the important telecommunications wavelength of λ = 1.55 μm. Here we theoretically demonstrate highly effective optical electro-absorptive modulation in a silicon waveguide overcoated with ITO. This modulator leverages the combination of a local electric field enhancement and increased absorption in the ITO when this material is locally brought into an ENZ state via electrical gating. This leads to large changes in modal absorption upon gating. We find that a 3 dB modulation depth can be achieved in a non-resonant structure with a length under 30 μm for the fundamental waveguide modes of either linear polarization, with absorption contrast values as high as 37. We also show a potential for 100 fJ/bit modulation, with a sacrifice in performance.

  View details for DOI 10.1364/OE.21.026387

  View details for Web of Science ID 000327007800096

• Broadband Sharp 90-degree Bends and T-Splitters in Plasmonic Coaxial Waveguides NANO LETTERS Shin, W., Cai, W., Catrysse, P. B., Veronis, G., Brongersma, M. L., Fan, S. 2013; 13 (10): 4753-4758

  Abstract

  We demonstrate numerically that sharp 90° bends and T-splitters can be designed in plasmonic coaxial waveguides at deep-subwavelength scale to operate without reflection and radiation over a broad range of wavelengths, including the telecommunication wavelength of 1.55 μm. We explain the principles of the operation using a transmission line model of the waveguide in the quasi-static limit. The compact bends and T-splitters open up a new avenue for the design of densely integrated optical circuits with minimal crosstalk.

  View details for DOI 10.1021/nl402335x

  View details for Web of Science ID 000326356300028

• Strain-induced pseudoheterostructure nanowires confining carriers at room temperature with nanoscale-tunable band profiles. Nano letters Nam, D., Sukhdeo, D. S., Kang, J., Petykiewicz, J., Lee, J. H., Jung, W. S., Vuckovic, J., Brongersma, M. L., Saraswat, K. C. 2013; 13 (7): 3118-3123

  Abstract

  Semiconductor heterostructures play a vital role in photonics and electronics. They are typically realized by growing layers of different materials, complicating fabrication and limiting the number of unique heterojunctions on a wafer. In this Letter, we present single-material nanowires which behave exactly like traditional heterostructures. These pseudoheterostructures have electronic band profiles that are custom-designed at the nanoscale by strain engineering. Since the band profile depends only on the nanowire geometry with this approach, arbitrary band profiles can be individually tailored at the nanoscale using existing nanolithography. We report the first experimental observations of spatially confined, greatly enhanced (>200×), and wavelength-shifted (>500 nm) emission from strain-induced potential wells that facilitate effective carrier collection at room temperature. This work represents a fundamentally new paradigm for creating nanoscale devices with full heterostructure behavior in photonics and electronics.

  View details for DOI 10.1021/nl401042n

  View details for PubMedID 23758608

• Self-assembly based plasmonic arrays tuned by atomic layer deposition for extreme visible light absorption. Nano letters Hägglund, C., Zeltzer, G., Ruiz, R., Thomann, I., Lee, H., Brongersma, M. L., Bent, S. F. 2013; 13 (7): 3352-3357

  Abstract

  Achieving complete absorption of visible light with a minimal amount of material is highly desirable for many applications, including solar energy conversion to fuel and electricity, where benefits in conversion efficiency and economy can be obtained. On a fundamental level, it is of great interest to explore whether the ultimate limits in light absorption per unit volume can be achieved by capitalizing on the advances in metamaterial science and nanosynthesis. Here, we combine block copolymer lithography and atomic layer deposition to tune the effective optical properties of a plasmonic array at the atomic scale. Critical coupling to the resulting nanocomposite layer is accomplished through guidance by a simple analytical model and measurements by spectroscopic ellipsometry. Thereby, a maximized absorption of light exceeding 99% is accomplished, of which up to about 93% occurs in a volume-equivalent thickness of gold of only 1.6 nm. This corresponds to a record effective absorption coefficient of 1.7 × 10(7) cm(-1) in the visible region, far exceeding those of solid metals, graphene, dye monolayers, and thin film solar cell materials. It is more than a factor of 2 higher than that previously obtained using a critically coupled dye J-aggregate, with a peak width exceeding the latter by 1 order of magnitude. These results thereby substantially push the limits for light harvesting in ultrathin, nanoengineered systems.

  View details for DOI 10.1021/nl401641v

  View details for PubMedID 23805835

• Self-Assembly Based Plasmonic Arrays Tuned by Atomic Layer Deposition for Extreme Visible Light Absorption NANO LETTERS Haegglund, C., Zeltzer, G., Ruiz, R., Thomann, I., Lee, H., Brongersma, M. L., Bent, S. F. 2013; 13 (7): 3352-3357

  View details for DOI 10.1021/nl401641v

  View details for Web of Science ID 000321884300057

• Strain-Induced Pseudoheterostructure Nanowires Confining Carriers at Room Temperature with Nanoscale-Tunable Band Profiles NANO LETTERS Nam, D., Sukhdeo, D. S., Kang, J., Petykiewicz, J., Lee, J. H., Jung, W. S., Vuckovic, J., Brongersma, M. L., Saraswat, K. C. 2013; 13 (7): 3118-3123

  View details for DOI 10.1021/nl401042n

  View details for Web of Science ID 000321884300019

• Effects of surface oxide formation on germanium nanowire band-edge photoluminescence APPLIED PHYSICS LETTERS Hashemi, F. S., Thombare, S., Fontcuberta i Morral, A., Brongersma, M. L., McIntyre, P. C. 2013; 102 (25)

  View details for DOI 10.1063/1.4812334

  View details for Web of Science ID 000321145200022

• Geometric light trapping with a V-trap for efficient organic solar cells OPTICS EXPRESS Kim, S. J., Margulis, G. Y., Rim, S., Brongersma, M. L., McGehee, M. D., Peumans, P. 2013; 21 (9): A305-A312

  View details for Web of Science ID 000318906500001

• PLASMONICS Harvest season for hot electrons NATURE NANOTECHNOLOGY Chalabi, H., Brongersma, M. L. 2013; 8 (4): 229-230

  View details for DOI 10.1038/nnano.2013.49

  View details for Web of Science ID 000317046800004

  View details for PubMedID 23552114

• Redesigning Photodetector Electrodes as an Optical Antenna NANO LETTERS Fan, P., Huang, K. C., Cao, L., Brongersma, M. L. 2013; 13 (2): 392-396

  Abstract

  At the nanoscale, semiconductor and metallic structures naturally exhibit strong, tunable optical resonances that can be utilized to enhance light-matter interaction and to dramatically increase the performance of chipscale photonic elements. Here, we demonstrate that the metallic leads used to extract current from a Ge nanowire (NW) photodetector can be redesigned to serve as optical antennas capable of concentrating light in the NW. The NW itself can also be made optically resonant and an overall performance optimization involves a careful tuning of both resonances. We show that such a procedure can result in broadband absorption enhancements of up to a factor 1.7 at a target wavelength of 660 nm and an ability to control the detector's polarization-dependent response. The results of this study demonstrate the critical importance of performing a joint optimization of the electrical and optical properties of the metallic and semiconductor building blocks in optoelectronic devices with nanoscale components.

  View details for DOI 10.1021/nl303535s

  View details for Web of Science ID 000315079500011

  View details for PubMedID 23297673

• The Planar Parabolic Optical Antenna NANO LETTERS Schoen, D. T., Coenen, T., Garcia de Abajo, F. J., Brongersma, M. L., Polman, A. 2013; 13 (1): 188-193

  Abstract

  One of the simplest and most common structures used for directing light in macroscale applications is the parabolic reflector. Parabolic reflectors are ubiquitous in many technologies, from satellite dishes to hand-held flashlights. Today, there is a growing interest in the use of ultracompact metallic structures for manipulating light on the wavelength scale. Significant progress has been made in scaling radiowave antennas to the nanoscale for operation in the visible range, but similar scaling of parabolic reflectors employing ray-optics concepts has not yet been accomplished because of the difficulty in fabricating nanoscale three-dimensional surfaces. Here, we demonstrate that plasmon physics can be employed to realize a resonant elliptical cavity functioning as an essentially planar nanometallic structure that serves as a broadband unidirectional parabolic antenna at optical frequencies.

  View details for DOI 10.1021/nl303850v

  View details for Web of Science ID 000313142300033

  View details for PubMedID 23194111

• Compact Aperiodic Metallic Groove Arrays for Unidirectional Launching of Surface Plasmons, Xinpeng Huang Nano Lett Brongersma, Mark, L., Krishna, C., White, Justin, S., Wahl, P., Brongersma, Mark, L., Miller, David, A.B. 2013; 13: 5420-5424
• Two-Dimensional Chalcogenide Nanoplates as Tunable Metamaterials via Chemical Intercalation Nano Letters Cha, J. 2013; 13: 5913-5918
• Plasmonics: Harvest season for hot electrons Nature Nanotechnology Chalabi, H., van Blaaderen, A., van Dillen, T., Kats, C., M., Velikov, K., Brongersma, M., L. 2013; 8: 229–230
• Geometric tuning of Plasmonic and Semiconductor Resonances in Nanophotonic devices Kenote presentation at Meta 13, Sharjah, Dubai Brongersma, Mark, L., Barnard, Edward, S., Cai, W., Brongersma, Mark, L. 2013
• Program committee for Section on Nanophotonics Brongersma, M., L. 2013
• Program committee for Section on Light-Matter interactions at the nanoscale Brongersma, M., L. 2013
• Program Committee of the Nanometa 2013 conference Brongersma, M., L. 2013
• One of the 5 Meeting Chairs for the 2013 Materials Research Society Spring Meeting. Brongersma, M., L. 2013
• Plasmonic and Semiconductor Building Blocks Brongersma, M., L. 2013
• Optical Nanostructures and Advanced Materials for Photovoltaics Brongersma, M., L. 2013
• Program committee of the SPIE conference on Metamaterials: Fundamentals and Applications Brongersma, M., L. 2013
• Electrically Driven Plasmonic Nanocircuits Breakthrough talk at Nano Meta 2013, Seefeld, Austria Brongersma, Mark, L., Vasudev, Alok, P., Brongersma, Mark, L. 2013
• Optimization of non-periodic plasmonic light-trapping layers for thin-film solar cells. Nature communications Pala, R. A., Liu, J. S., Barnard, E. S., Askarov, D., Garnett, E. C., Fan, S., Brongersma, M. L. 2013; 4: 2095-?

  Abstract

  Non-periodic arrangements of nanoscale light scatterers allow for the realization of extremely effective broadband light-trapping layers for solar cells. However, their optimization is challenging given the massive number of degrees of freedom. Brute-force, full-field electromagnetic simulations are computationally too time intensive to identify high-performance solutions in a vast design space. Here we illustrate how a semi-analytical model can be used to quickly identify promising non-periodic spatial arrangements of nanoscale scatterers. This model only requires basic knowledge of the scattering behaviour of a chosen nanostructure and the waveguiding properties of the semiconductor layer in a cell. Due to its simplicity, it provides new intuition into the ideal amount of disorder in high-performance light-trapping layers. Using simulations and experiments, we demonstrate that arrays of nanometallic stripes featuring a limited amount of disorder, for example, following a quasi-periodic or Fibonacci sequence, can substantially enhance solar absorption over perfectly periodic and random arrays.

  View details for DOI 10.1038/ncomms3095

  View details for PubMedID 23817445

• Plasmonics in optoelectronic devices NANOTECHNOLOGY Demming, A., Brongersma, M., Kim, D. S. 2012; 23 (44)

  View details for DOI 10.1088/0957-4484/23/44/440201

  View details for Web of Science ID 000310574700001

  View details for PubMedID 23079768

• An Electrically-Driven GaAs Nanowire Surface Plasmon Source NANO LETTERS Fan, P., Colombo, C., Huang, K. C., Krogstrup, P., Nygard, J., Fontcuberta i Morral, A., Brongersma, M. L. 2012; 12 (9): 4943-4947

  Abstract

  Over the past decade, the properties of plasmonic waveguides have extensively been studied as key elements in important applications that include biosensors, optical communication systems, quantum plasmonics, plasmonic logic, and quantum-cascade lasers. Whereas their guiding properties are by now fairly well-understood, practical implementation in chipscale systems is hampered by the lack of convenient electrical excitation schemes. Recently, a variety of surface plasmon lasers have been realized, but they have not yet been waveguide-coupled. Planar incoherent plasmonic sources have recently been coupled to plasmonic guides but routing of plasmonic signals requires coupling to linear waveguides. Here, we present an experimental demonstration of electrically driven GaAs nanowire light sources integrated with plasmonic nanostrip waveguides with a physical cross-section of 0.08?(2). The excitation and waveguiding of surface plasmon-polaritons (SPPs) is experimentally demonstrated and analyzed with the help of full-field electromagnetic simulations. Splitting and routing of the electrically generated SPP signals around 90° bends are also shown. The realization of integrated plasmon sources greatly increases the applicability range of plasmonic waveguides and routing elements.

  View details for DOI 10.1021/nl302521v

  View details for Web of Science ID 000308576000087

  View details for PubMedID 22924961

• Antenna electrodes for controlling electroluminescence NATURE COMMUNICATIONS Huang, K. C., Seo, M., Huo, Y., Sarmiento, T., Harris, J. S., Brongersma, M. L. 2012; 3

  Abstract

  Optical antennas can control the emission from quantum emitters by modifying the local density of optical states via the Purcell effect. A variety of nanometallic antennas have been implemented to enhance and control key photoluminescence properties, such as the decay rate, directionality and polarization. However, their implementation in active devices has been hampered by the need to precisely place emitters near an antenna and to efficiently excite them electrically. Here we illustrate a design methodology for antenna electrodes that for the first time facilitates simultaneous operation as electrodes for current injection and as antennas capable of optically manipulating the electroluminescence. We show that by confining the electrically excited carriers to the vicinity of antenna electrodes and maximizing the optical coupling of the emission to a single, well-defined antenna mode, their electroluminescence can be effectively controlled. This work spurs the development of densely integrated, electrically driven light sources with tailored emission properties.

  View details for DOI 10.1038/ncomms1985

  View details for Web of Science ID 000308801100021

  View details for PubMedID 22893129

• Direct-gap photoluminescence from germanium nanowires PHYSICAL REVIEW B Kawamura, Y., Huang, K. C., Thombare, S. V., Hu, S., Gunji, M., Ishikawa, T., Brongersma, M. L., Itoh, K. M., McIntyre, P. C. 2012; 86 (3)

  View details for DOI 10.1103/PhysRevB.86.035306

  View details for Web of Science ID 000306189300005

• An invisible metal-semiconductor photodetector NATURE PHOTONICS Fan, P., Chettiar, U. K., Cao, L., Afshinmanesh, F., Engheta, N., Brongersma, M. L. 2012; 6 (6): 380-385

  View details for DOI 10.1038/NPHOTON.2012.108

  View details for Web of Science ID 000304598200015

• A micromachining-based technology for enhancing germanium light emission via tensile strain NATURE PHOTONICS Jain, J. R., Hryciw, A., Baer, T. M., Miller, D. A., Brongersma, M. L., Howe, R. T. 2012; 6 (6): 398-405

  View details for DOI 10.1038/NPHOTON.2012.111

  View details for Web of Science ID 000304598200018

• Hybrid Silicon Nanocone-Polymer Solar Cells NANO LETTERS Jeong, S., Garnett, E. C., Wang, S., Yu, Z., Fan, S., Brongersma, M. L., McGehee, M. D., Cui, Y. 2012; 12 (6): 2971-2976

  Abstract

  Recently, hybrid Si/organic solar cells have been studied for low-cost Si photovoltaic devices because the Schottky junction between the Si and organic material can be formed by solution processes at a low temperature. In this study, we demonstrate a hybrid solar cell composed of Si nanocones and conductive polymer. The optimal nanocone structure with an aspect ratio (height/diameter of a nanocone) less than two allowed for conformal polymer surface coverage via spin-coating while also providing both excellent antireflection and light trapping properties. The uniform heterojunction over the nanocones with enhanced light absorption resulted in a power conversion efficiency above 11%. Based on our simulation study, the optimal nanocone structures for a 10 ?m thick Si solar cell can achieve a short-circuit current density, up to 39.1 mA/cm(2), which is very close to the theoretical limit. With very thin material and inexpensive processing, hybrid Si nanocone/polymer solar cells are promising as an economically viable alternative energy solution.

  View details for DOI 10.1021/nl300713x

  View details for Web of Science ID 000305106400054

  View details for PubMedID 22545674

• Nanophotonic light trapping with patterned transparent conductive oxides OPTICS EXPRESS Vasudev, A. P., Schuller, J. A., Brongersma, M. L. 2012; 20 (10): A385-A394

  Abstract

  Transparent conductive oxides (TCOs) play a crucial role in solar cells by efficiently transmitting sunlight and extracting photo-generated charge. Here, we show how nanophotonics concepts can be used to transform TCO films into effective photon management layers for solar cells. This is accomplished by patterning the TCO layer present on virtually every thin-film solar cell into an array of subwavelength beams that support optical (Mie) resonances. These resonances can be exploited to concentrate randomly polarized sunlight or to effectively couple it to guided and diffracted modes. We first demonstrate these concepts with a model system consisting of a patterned TCO layer on a thin silicon (Si) film and outline a design methodology for high-performance, TCO-based light trapping coatings. We then show that the short circuit current density from a 300 nm thick amorphous silicon (a-Si) cell with an optimized TCO anti-reflection coating can be enhanced from 19.9 mA/cm2 to 21.1 mA/cm2, out of a possible 26.0 mA/cm2, by using an optimized nanobeam array. The key differences and advantages over plasmonic light trapping layers will be discussed.

  View details for Web of Science ID 000303879700002

  View details for PubMedID 22712089

• Electroluminescence from strained germanium membranes and implications for an efficient Si-compatible laser APPLIED PHYSICS LETTERS Nam, D., Sukhdeo, D., Cheng, S., Roy, A., Huang, K. C., Brongersma, M., Nishi, Y., Saraswat, K. 2012; 100 (13)

  View details for DOI 10.1063/1.3699224

  View details for Web of Science ID 000302230800012

• Self-limited plasmonic welding of silver nanowire junctions NATURE MATERIALS Garnett, E. C., Cai, W., Cha, J. J., Mahmood, F., Connor, S. T., Christoforo, M. G., Cui, Y., McGehee, M. D., Brongersma, M. L. 2012; 11 (3): 241-249

  Abstract

  Nanoscience provides many strategies to construct high-performance materials and devices, including solar cells, thermoelectrics, sensors, transistors, and transparent electrodes. Bottom-up fabrication facilitates large-scale chemical synthesis without the need for patterning and etching processes that waste material and create surface defects. However, assembly and contacting procedures still require further development. Here, we demonstrate a light-induced plasmonic nanowelding technique to assemble metallic nanowires into large interconnected networks. The small gaps that form naturally at nanowire junctions enable effective light concentration and heating at the point where the wires need to be joined together. The extreme sensitivity of the heating efficiency on the junction geometry causes the welding process to self-limit when a physical connection between the wires is made. The localized nature of the heating prevents damage to low-thermal-budget substrates such as plastics and polymer solar cells. This work opens new avenues to control light, heat and mass transport at the nanoscale.

  View details for DOI 10.1038/NMAT3238

  View details for Web of Science ID 000300625500025

  View details for PubMedID 22306769

• Thermal Stability and Surface Passivation of Ge Nanowires Coated by Epitaxial SiGe Shells NANO LETTERS Hu, S., Kawamura, Y., Huang, K. C., Li, Y., Marshall, A. F., Itoh, K. M., Brongersma, M. L., McIntyre, P. C. 2012; 12 (3): 1385-1391

  Abstract

  Epitaxial growth of a highly strained, coherent SiGe alloy shell around a Ge nanowire core is investigated as a method to achieve surface passivation and carrier confinement, important in realizing nanowire devices. The high photoluminescence intensity observed from the core-shell nanowires with spectral features similar to that of bulk Ge indicates effective surface passivation. Thermal stability of these core-shell heterostructures has been systematically investigated, with a method demonstrated to avoid misfit strain relaxation during postgrowth annealing.

  View details for DOI 10.1021/nl204053w

  View details for Web of Science ID 000301406800046

  View details for PubMedID 22364183

• Metal-dielectric-metal surface plasmon-polariton resonators PHYSICAL REVIEW B Chandran, A., Barnard, E. S., White, J. S., Brongersma, M. L. 2012; 85 (8)

  View details for DOI 10.1103/PhysRevB.85.085416

  View details for Web of Science ID 000300090800004

• Ultrathin crystalline-silicon solar cells with embedded photonic crystals APPLIED PHYSICS LETTERS Mallick, S. B., Agrawal, M., Wangperawong, A., Barnard, E. S., Singh, K. K., Visser, R. J., Brongersma, M. L., Peumans, P. 2012; 100 (5)

  View details for DOI 10.1063/1.3680602

  View details for Web of Science ID 000300065300069

• Highly-Strained Germanium as a Gain Medium for Silicon-Compatible Lasers 2012 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) Sukhdeo, D., Nam, D., Cheng, S., Yuan, Z., Roy, A., Huang, K. C., Brongersma, M., Nishi, Y., Saraswat, K. 2012

  View details for Web of Science ID 000310362401035

• Editorial Board of the Journal Nano-Photonics Brongersma, Mark, L., Jun, Y. C., Brongersma, Mark, L. 2012
• Editorial Advisory Board of the Journal Advanced Optical Materials Brongersma, Mark, L., Agrawal, M., Wangperawong, A., Barnard, Edward, S., Singh, Kaushal, K., Visser, Robert, J. 2012
• Electrical control of plasmonic Nanodevices SPIE Newsroom. Cai, W., Sukhdeo, D., Roy, A., Balram, K., Cheng, S., Huang, K. C., Brongersma, M. L. 2012

  View details for DOI 10.1117/2.1201112.004060

• Optical antennas for information technology and energy harvesting Optical Antenna Theory, Design and Applications Brongersma, M. edited by Alù, A., Engheta, N. Cambridge University Press. 2012: 1
• Plasmonics Short course at the Conference on Lasers and Electro-optics CLEO US, San Jose Brongersma, Mark, L., Selker, Mark, D., Catrysse, Peter, B., Brongersma, Mark, L. 2012
• Plasmonic and Semiconductor Building Blocks for Hybrid Nanophotonic Devices Brongersma, M., L. 2012
• International program Committee of the 12th Near-field Optics Brongersma, M., L. 2012
• Rolling mask nanolithography: the pathway to large area and low cost nanofabrication Kobrin, B., Barnard, Edward, S., Brongersma, Mark, L., Kwak, M. K., Guo, L., Jay 2012
• Vice Chair Gordon Conference on Plasmonics Brongersma, M., L. 2012
• Measurement of the polarization state of light using an integrated plasmonic polarimeter Nanophotonics Afshinmanesh, F., Brongersma, Mark, L. 2012; 1: 125–129
• Smart & Adaptive Optics Brongersma, M., L. 2012
• Excitons and Plasmon Resonances in Nanostructures III Brongersma, M., L. 2012
• Routing and photodetection in subwavelength plasmonic slot waveguides Nanophotonics Ly-Gagnon 1, D., Brongersma, M., L., Snoeks, E., Polman, A. 2012; 1: 9–16
• Metal-dielectric-metal surface plasmon-polariton resonators Phys. Rev Chandran, A., White, Justin, S., Park, J., Schuller, Jon, A., Clemens, Bruce, M., Brongersma, Mark, L. 2012; B 85: 85416
• Antenna electrodes for optical sources and solar cells Keynote presentation at the SPIE Annual Meeting, San Diego Brongersma, Mark, L., Thombare, S., Morral, A. F., Brongersma, Mark, L., McIntyre, Paul, C. 2012
• Strained germanium thin film membrane on silicon substrate for optoelectronics OPTICS EXPRESS Nam, D., Sukhdeo, D., Roy, A., Balram, K., Cheng, S., Huang, K. C., Yuan, Z., Brongersma, M., Nishi, Y., Miller, D., Saraswat, K. 2011; 19 (27): 25866-25872

  Abstract

  This work presents a novel method to introduce a sustainable biaxial tensile strain larger than 1% in a thin Ge membrane using a stressor layer integrated on a Si substrate. Raman spectroscopy confirms 1.13% strain and photoluminescence shows a direct band gap reduction of 100meV with enhanced light emission efficiency. Simulation results predict that a combination of 1.1% strain and heavy n(+) doping reduces the required injected carrier density for population inversion by over a factor of 60. We also present the first highly strained Ge photodetector, showing an excellent responsivity well beyond 1.6um.

  View details for Web of Science ID 000301151500004

  View details for PubMedID 22274174

• Engineering light absorption in single-nanowire solar cells with metal nanoparticles NEW JOURNAL OF PHYSICS Colombo, C., Krogstrup, P., Nygard, J., Brongersma, M. L., Fontcuberta i Morral, A. 2011; 13

  View details for DOI 10.1088/1367-2630/13/12/123026

  View details for Web of Science ID 000299006200005

• Rapid computation of light scattering from aperiodic plasmonic structures PHYSICAL REVIEW B Huang, X., Brongersma, M. L. 2011; 84 (24)

  View details for DOI 10.1103/PhysRevB.84.245120

  View details for Web of Science ID 000298561000001

• A submicron plasmonic dichroic splitter NATURE COMMUNICATIONS Liu, J. S., Pala, R. A., Afshinmanesh, F., Cai, W., Brongersma, M. L. 2011; 2

  Abstract

  Spectral imaging and sensing techniques, new solar cell designs and wavelength-division multiplexing in optical communication rely on structures that collect and sort photons by wavelength. The strong push for chip-scale integration of such optical components has necessitated ultracompact, planar structures, and fomented great interest in identifying the smallest possible devices. Consequently, novel micro-ring, photonic crystal and plasmonic solutions have emerged. Meanwhile, the optical coupling of subwavelength plasmonic structures supporting a very limited number of modes has also enabled new functionalities, including Fano resonances and structural electromagnetically-induced transparency. Here we show how two similarly sized subwavelength metal grooves can form an ultracompact submicron plasmonic dichroic splitter. Each groove supports just two electromagnetic modes of opposite symmetry that allows independent control of how a groove collects free-space photons and directs surface plasmon polaritons. These results show how the symmetry of electromagnetic modes can be exploited to build compact optical components.

  View details for DOI 10.1038/ncomms1537

  View details for Web of Science ID 000297686500012

  View details for PubMedID 22068592

• Tensile-strained germanium-on-insulator substrate fabrication for silicon-compatible optoelectronics OPTICAL MATERIALS EXPRESS Jain, J. R., Ly-Gagnon, D., Balram, K. C., White, J. S., Brongersma, M. L., Miller, D. A., Howe, R. T. 2011; 1 (6): 1121-1126

  View details for Web of Science ID 000299048700007

• Imaging the Hidden Modes of Ultrathin Plasmonic Strip Antennas by Cathodoluminescence NANO LETTERS Barnard, E. S., Coenen, T., Vesseur, E. J., Polman, A., Brongersma, M. L. 2011; 11 (10): 4265-4269

  Abstract

  We perform spectrally resolved cathodoluminescence (CL) imaging nanoscopy using a 30 keV electron beam to identify the resonant modes of an ultrathin (20 nm), laterally tapered plasmonic Ag nanostrip antenna. We resolve with deep-subwavelength resolution four antenna resonances (resonance orders m = 2-5) that are ascribed to surface plasmon polariton standing waves that are confined on the strip. We map the local density of states on the strip surface and show that it has contributions from symmetric and antisymmetric surface plasmon polariton modes, each with a very different mode index. This work illustrates the power of CL experiments that can visualize hidden modes that for symmetry reasons have been elusive in optical light scattering experiments.

  View details for DOI 10.1021/nl202256k

  View details for Web of Science ID 000295667000041

  View details for PubMedID 21879729

• Power flow from a dipole emitter near an optical antenna OPTICS EXPRESS Huang, K. C., Jun, Y. C., Seo, M., Brongersma, M. L. 2011; 19 (20): 19084-19092

  Abstract

  Current methods to calculate the emission enhancement of a quantum emitter coupled to an optical antenna of arbitrary geometry rely on analyzing the total Poynting vector power flow out of the emitter or the dyadic Green functions from full-field numerical simulations. Unfortunately, these methods do not provide information regarding the nature of the dominant energy decay pathways. We present a new approach that allows for a rigorous separation, quantification, and visualization of the emitter output power flow captured by an antenna and the subsequent reradiation power flow to the far field. Such analysis reveals unprecedented details of the emitter/antenna coupling mechanisms and thus opens up new design strategies for strongly interacting emitter/antenna systems used in sensing, active plasmonics and metamaterials, and quantum optics.

  View details for Web of Science ID 000295373800033

  View details for PubMedID 21996849

• Electrically Controlled Nonlinear Generation of Light with Plasmonics SCIENCE Cai, W., Vasudev, A. P., Brongersma, M. L. 2011; 333 (6050): 1720-1723

  Abstract

  Plasmonics provides a route to develop ultracompact optical devices on a chip by using extreme light concentration and the ability to perform simultaneous electrical and optical functions. These properties also make plasmonics an ideal candidate for dynamically controlling nonlinear optical interactions at the nanoscale. We demonstrate electrically tunable harmonic generation of light from a plasmonic nanocavity filled with a nonlinear medium. The metals that define the cavity also serve as electrodes that can generate high direct current electric fields across the nonlinear material. A fundamental wave at 1.56 micrometers was frequency doubled and modulated in intensity by applying a moderate external voltage to the electrodes, yielding a voltage-dependent nonlinear generation with a normalized magnitude of ~7% per volt.

  View details for DOI 10.1126/science.1207858

  View details for Web of Science ID 000295121500034

  View details for PubMedID 21940887

• Photocurrent mapping of near-field optical antenna resonances NATURE NANOTECHNOLOGY Barnard, E. S., Pala, R. A., Brongersma, M. L. 2011; 6 (9): 588-593

  Abstract

  An increasing number of photonics applications make use of nanoscale optical antennas that exhibit a strong, resonant interaction with photons of a specific frequency. The resonant properties of such antennas are conventionally characterized by far-field light-scattering techniques. However, many applications require quantitative knowledge of the near-field behaviour, and existing local field measurement techniques provide only relative, rather than absolute, data. Here, we demonstrate a photodetector platform that uses a silicon-on-insulator substrate to spectrally and spatially map the absolute values of enhanced fields near any type of optical antenna by transducing local electric fields into photocurrent. We are able to quantify the resonant optical and materials properties of nanoscale (?50 nm) and wavelength-scale (?1 µm) metallic antennas as well as high-refractive-index semiconductor antennas. The data agree well with light-scattering measurements, full-field simulations and intuitive resonator models.

  View details for DOI 10.1038/NNANO.2011.131

  View details for Web of Science ID 000294550000016

  View details for PubMedID 21857687

• Plasmon Enhanced Solar-to-Fuel Energy Conversion NANO LETTERS Thomann, I., Pinaud, B. A., Chen, Z., Clemens, B. M., Jaramillo, T. F., Brongersma, M. L. 2011; 11 (8): 3440-3446

  Abstract

  Future generations of photoelectrodes for solar fuel generation must employ inexpensive, earth-abundant absorber materials in order to provide a large-scale source of clean energy. These materials tend to have poor electrical transport properties and exhibit carrier diffusion lengths which are significantly shorter than the absorption depth of light. As a result, many photoexcited carriers are generated too far from a reactive surface and recombine instead of participating in solar-to-fuel conversion. We demonstrate that plasmonic resonances in metallic nanostructures and multilayer interference effects can be engineered to strongly concentrate sunlight close to the electrode/liquid interface, precisely where the relevant reactions take place. On comparison of spectral features in the enhanced photocurrent spectra to full-field electromagnetic simulations, the contribution of surface plasmon excitations is verified. These results open the door to the optimization of a wide variety of photochemical processes by leveraging the rapid advances in the field of plasmonics.

  View details for DOI 10.1021/nl201908s

  View details for Web of Science ID 000293665600066

  View details for PubMedID 21749077

• Sombrero-Shaped Plasmonic Nanoparticles with Molecular-Level Sensitivity and Multifunctionality ACS NANO Wi, J., Barnard, E. S., Wilson, R. J., Zhang, M., Tang, M., Brongersma, M. L., Wang, S. X. 2011; 5 (8): 6449-6457

  Abstract

  We demonstrate top-down synthesis of monodisperse plasmonic nanoparticles designed to contain internal Raman hot spots. Our Raman-active nanoparticles are fabricated using nanoimprint lithography and thin-film deposition and are composed of novel internal structures with sublithographic dimensions: a disk-shaped Ag core, a Petri-dish-shaped SiO(2) base whose inner surface is coated with Ag film, and a sub-10 nm scale circular gap between the core and the base. Confocal Raman measurements and electromagnetic simulations show that Raman hot spots appear at the inside perimeter of individual nanoparticles and serve as the source of a 1000-fold improvement of minimum molecular detection level that enables detection of signals from a few molecules near hot spots. A multimodality version of these nanoparticles, which includes the functionality offered by magnetic multilayers, is also demonstrated. These results illustrate the potential of direct fabrication for creating exotic monodisperse nanoparticles, which combine engineered internal nanostructures and multilayer composite materials, for use in nanoparticle-based molecular imaging and detection.

  View details for DOI 10.1021/nn201649n

  View details for Web of Science ID 000294085400044

  View details for PubMedID 21732686

• Multiple-Wavelength Focusing of Surface Plasmons with a Nonperiodic Nanoslit Coupler NANO LETTERS Tanemura, T., Balram, K. C., Ly-Gagnon, D., Wahl, P., White, J. S., Brongersma, M. L., Miller, D. A. 2011; 11 (7): 2693-2698

  Abstract

  A novel type of multiple-wavelength focusing plasmonic coupler based on a nonperiodic nanoslit array is designed and experimentally demonstrated. An array of nanoslits patterned on a thin metal film is used to couple free-space light into surface plasmon polaritons (SPPs) and simultaneously focus different-wavelength SPPs into arbitrary predefined locations in the two-dimensional plane. We design and fabricate a compact triplexer on a glass substrate with an integrated silicon photodetector. The photocurrent spectra demonstrate that the incident light is effectively coupled to SPPs and routed into three different focal spots depending on the wavelength. The proposed scheme provides a simple method of building wavelength-division multiplexing and spectral filtering elements, integrated with other plasmonic and optoelectronic devices.

  View details for DOI 10.1021/nl200938h

  View details for Web of Science ID 000292849400022

  View details for PubMedID 21627101

• Optical Coupling of Deep-Subwavelength Semiconductor Nanowires NANO LETTERS Cao, L., Fan, P., Brongersma, M. L. 2011; 11 (4): 1463-1468

  Abstract

  Systems of coupled resonators manifest a myriad of exciting fundamental physical phenomena. Analogous to the synthesis of molecules from single atoms, the construction of photonic molecules from stand-alone optical resonators represents a powerful strategy to realize novel functionalities. The coupling of high quality factor (Q) dielectric and semiconductor microresonators is by now well-understood and chipscale applications are abound. The coupling behavior of low-Q nanometallic structures has also been exploited to realize high-performance plasmonic devices and metamaterials. Although dense arrays of semiconductor nanoparticles and nanowires (NWs) find increasing use in optoelectronic devices, their photonic coupling has remained largely unexplored. These high refractive index nano-objects can serve as low-Q optical antennas that can effectively receive and broadcast light. We demonstrate that the broad band antenna response of a pair of NWs can be tuned significantly by engineering their optical coupling and develop an intuitive coupled-mode theory to explain our observations.

  View details for DOI 10.1021/nl1040429

  View details for Web of Science ID 000289341500013

  View details for PubMedID 21443245

• Plasmonic beaming and active control over fluorescent emission NATURE COMMUNICATIONS Jun, Y. C., Huang, K. C., Brongersma, M. L. 2011; 2

  Abstract

  Nanometallic optical antennas are rapidly gaining popularity in applications that require exquisite control over light concentration and emission processes. The search is on for high-performance antennas that offer facile integration on chips. Here we demonstrate a new, easily fabricated optical antenna design that achieves an unprecedented level of control over fluorescent emission by combining concepts from plasmonics, radiative decay engineering and optical beaming. The antenna consists of a nanoscale plasmonic cavity filled with quantum dots coupled to a miniature grating structure that can be engineered to produce one or more highly collimated beams. Electromagnetic simulations and confocal microscopy were used to visualize the beaming process. The metals defining the plasmonic cavity can be utilized to electrically control the emission intensity and wavelength. These findings facilitate the realization of a new class of active optical antennas for use in new optical sources and a wide range of nanoscale optical spectroscopy applications.

  View details for DOI 10.1038/ncomms1286

  View details for Web of Science ID 000289983800021

  View details for PubMedID 21505439

• Atomic Layer Deposition of Lead Sulfide Quantum Dots on Nanowire Surfaces NANO LETTERS Dasgupta, N. P., Jung, H. J., Trejo, O., McDowell, M. T., Hryciw, A., Brongersma, M., Sinclair, R., Prinz, F. B. 2011; 11 (3): 934-940

  Abstract

  Quantum dots provide unique advantages in the design of novel optoelectronic devices owing to the ability to tune their properties as a function of size. Here we demonstrate a new technique for fabrication of quantum dots during the nucleation stage of atomic layer deposition (ALD) of PbS. Islands with sub-10 nm diameters were observed during the initial ALD cycles by transmission electron microscopy, and in situ observations of the coalescence and sublimation behavior of these islands show the possibility of further modifying the size and density of dots by annealing. The ALD process can be used to cover high-aspect-ratio nanostructures, as demonstrated by the uniform coating of a Si nanowire array with a single layer of PbS quantum dots. Photoluminescence measurements on the quantum dot/nanowire composites show a blue shift when the number of ALD cycles is decreased, suggesting a route to fabricate unique three-dimensional nanostructured devices such as solar cells.

  View details for DOI 10.1021/nl103001h

  View details for Web of Science ID 000288061500003

  View details for PubMedID 21319844

• Thermo-optic tuning of erbium-doped amorphous silicon nitride microdisk resonators APPLIED PHYSICS LETTERS Hryciw, A. C., Kekatpure, R. D., Yerci, S., Dal Negro, L., Brongersma, M. L. 2011; 98 (4)

  View details for DOI 10.1063/1.3545845

  View details for Web of Science ID 000286676600002

• Plasmonic Dye-Sensitized Solar Cells ADVANCED ENERGY MATERIALS Ding, I., Zhu, J., Cai, W., Moon, S., Cai, N., Wang, P., Zakeeruddin, S. M., Graetzel, M., Brongersma, M. L., Cui, Y., McGehee, M. D. 2011; 1 (1): 52-57

  View details for DOI 10.1002/aenm.201000041

  View details for Web of Science ID 000291725000004

• Effect of illlumination on thermionic emission from microfabricated silicon carbide structures 16th International Solid-State Sensors, Actuators and Microsystems, Beijing, China Lee, J., H., Brongersma, Mark, L. 2011
• Modification of the spontaneous emission rate of nitrogen-vacancy centers in diamond by coupling to plasmons Advances in Photonics of Quantum Computing, Memory, and Communication IV, San Francisco, CA Faraon, A., White, J., Barnard, E., Liu, J., Brongersma, Mark, L. 2011
• Hybrid Semiconductor/Plasmonic Devices for Nanophotonics Keynote presentation at the SPIE Annual Meeting, San Diego Brongersma, Mark, L., Fan, P., Vasudev, Alok, P., White, Justin, S., Yu, Z., Cai, W. 2011
• Guest Editor for special Green Photonics issue for the Journal of Optics Brongersma, Mark, L., Pala, R., Brongersma, Mark, L. 2011
• Plasmons and rust for solar energy conversion Thomann, I., Pinaud, B., Pala, R., Seo, M., Chen, Z., Jaramillo, T., Brongersma, M. L. 2011
• Nanoplasmonics course at the Conference on Lasers and Electro-optics CLEO Europe, Munich, Germany Brongersma, Mark, L., Brongersma, M. L. 2011
• Program Committee for the Annual OSA meeting on Integrated Photonics Research Brongersma, M., L. 2011
• Guest Editor for a special Plasmonics issue for the journal Nanotechnology Brongersma, Mark, L., Park, J., Fan, P., Clemens, B., Brongersma, Mark, L. 2011
• Submicron plasmonic dichroic splitter Nature Communications Liu, John, S.Q. 2011; 2: 525
• Strained Germanium Membrane using Thin Film Stressor for High Efficiency Laser 2011 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) Nam, D., Roy, A. M., Huang, K. C., Brongersma, M. L., Saraswat, K. C. 2011

  View details for Web of Science ID 000295612403095

• Nanowire Solar Cells ANNUAL REVIEW OF MATERIALS RESEARCH, VOL 41 Garnett, E. C., Brongersma, M. L., Cui, Y., McGehee, M. D. 2011; 41: 269-295

  View details for DOI 10.1146/annurev-matsci-062910-100434

  View details for Web of Science ID 000294028600011

• An Integrated Plasmonic Polarimeter Afshinmanesh, F., White, J. S., Cai, W., Brongersma, M. L. IEEE. 2011

  View details for Web of Science ID 000295612404094

• Elements for Plasmonic Nanocircuits with Three-Dimensional Slot Waveguides ADVANCED MATERIALS Cai, W., Shin, W., Fan, S., Brongersma, M. L. 2010; 22 (45): 5120-?

  View details for DOI 10.1002/adma.201001440

  View details for Web of Science ID 000285396400010

  View details for PubMedID 20859937

• High Excitation Transfer Efficiency from Energy Relay Dyes in Dye-Sensitized Solar Cells NANO LETTERS Hardin, B. E., Yum, J., Hoke, E. T., Jun, Y. C., Pechy, P., Torres, T., Brongersma, M. L., Nazeeruddin, M. K., Graetzel, M., McGehee, M. D. 2010; 10 (8): 3077-3083

  Abstract

  The energy relay dye, 4-(Dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM), was used with a near-infrared sensitizing dye, TT1, to increase the overall power conversion efficiency of a dye-sensitized solar cell (DSC) from 3.5% to 4.5%. The unattached DCM dyes exhibit an average excitation transfer efficiency (ETE) of 96% inside TT1-covered, mesostructured TiO(2) films. Further performance increases were limited by the solubility of DCM in an acetonitrile based electrolyte. This demonstration shows that energy relay dyes can be efficiently implemented in optimized dye-sensitized solar cells, but also highlights the need to design highly soluble energy relay dyes with high molar extinction coefficients.

  View details for DOI 10.1021/nl1016688

  View details for Web of Science ID 000280728900058

  View details for PubMedID 20617816

• Response to "Comment on 'Energy transfer in nanowire solar cells with photon-harvesting shells'" [J. Appl. Phys. 105, 124509 (2009)] JOURNAL OF APPLIED PHYSICS Peters, C. H., Guichard, A. R., Hryciw, A. C., Brongersma, M. L., McGehee, M. D. 2010; 108 (2)

  View details for DOI 10.1063/1.3452392

  View details for Web of Science ID 000280909900118

• Tuning the Color of Silicon Nanostructures NANO LETTERS Cao, L., Fan, P., Barnard, E. S., Brown, A. M., Brongersma, M. L. 2010; 10 (7): 2649-2654

  Abstract

  Empowering silicon (Si) with optical functions constitutes a very important challenge in photonics. The scalable fabrication capabilities for this earth-abundant, environmentally friendly material are unmatched in sophistication and can be unleashed to realize a plethora of high-performance photonic functionalities that find application in information, bio-, display, camouflage, ornamental, and energy technologies. Nanofashioning represents a general strategy to turn Si into a useful optical material and Si structures have already been engineered to enable light emission, optical cloaking, waveguiding, nonlinear optics, enhanced light absorption, and sensing. Here, we demonstrate that a wide spectrum of colors can be generated by harnessing the strong resonant light scattering properties of Si nanostructures under white light illumination. The ability to engineer such colors in a predetermined fashion through a choice of the structure size, dielectric environment, and illumination conditions opens up entirely new applications of Si and puts this material in a new light.

  View details for DOI 10.1021/nl1013794

  View details for Web of Science ID 000280416200059

  View details for PubMedID 20507083

• NANOSCALE OPTICS Plasmonics gets transformed NATURE NANOTECHNOLOGY Cai, W., Brongersma, M. L. 2010; 5 (7): 485-486

  View details for Web of Science ID 000280529800008

  View details for PubMedID 20606641

• Phase-Coupled Plasmon-Induced Transparency PHYSICAL REVIEW LETTERS Kekatpure, R. D., Barnard, E. S., Cai, W., Brongersma, M. L. 2010; 104 (24)

  Abstract

  We demonstrate the existence of electromagnetically-induced-transparency (EIT-)like spectral response in a system of nanoscale plasmonic resonator antennas coupled by means of a single-mode silicon waveguide. Our proposed scheme exploits the phase of the coupling between the antennas in contrast with the existing plasmonic approaches that rely on the strength of direct, near-field coupling of nanometallic elements. Quality factors of over 100 and group indices of over 10 are readily achieved at near-infrared frequencies by a single unit in ?1???m2 of total device footprint, representing a more than two orders size reduction over corresponding dielectric EIT structures. By obviating the need for a near-field interaction, the phase-coupling scheme also facilitates an improved access to the coupling medium between the resonators thereby paving the way toward dynamic control of their sharp EIT-like spectral response.

  View details for DOI 10.1103/PhysRevLett.104.243902

  View details for Web of Science ID 000278884900001

  View details for PubMedID 20867303

• Strong Modification of Quantum Dot Spontaneous Emission via Gap Plasmon Coupling in Metal Nanoslits JOURNAL OF PHYSICAL CHEMISTRY C Jun, Y. C., Pala, R., Brongersma, M. L. 2010; 114 (16): 7269-7273

  View details for DOI 10.1021/jp9083376

  View details for Web of Science ID 000276889300009

• APPLIED PHYSICS The Case for Plasmonics SCIENCE Brongersma, M. L., Shalaev, V. M. 2010; 328 (5977): 440-441

  View details for DOI 10.1126/science.1186905

  View details for Web of Science ID 000276952400023

  View details for PubMedID 20413483

• Resonant Germanium Nanoantenna Photodetectors NANO LETTERS Cao, L., Park, J., Fan, P., Clemens, B., Brongersma, M. L. 2010; 10 (4): 1229-1233

  Abstract

  On-chip optical interconnection is considered as a substitute for conventional electrical interconnects as microelectronic circuitry continues to shrink in size. Central to this effort is the development of ultracompact, silicon-compatible, and functional optoelectronic devices. Photodetectors play a key role as interfaces between photonics and electronics but are plagued by a fundamental efficiency-speed trade-off. Moreover, engineering of desired wavelength and polarization sensitivities typically requires construction of space-consuming components. Here, we demonstrate how to overcome these limitations in a nanoscale metal-semiconductor-metal germanium photodetector for the optical communications band. The detector capitalizes on antenna effects to dramatically enhance the photoresponse (>25-fold) and to enable wavelength and polarization selectivity. The electrical design featuring asymmetric metallic contacts also enables ultralow dark currents (approximately 20 pA), low power consumption, and high-speed operation (>100 GHz). The presented high-performance photodetection scheme represents a significant step toward realizing integrated on-chip communication and manifests a new paradigm for developing miniaturized optoelectronics components.

  View details for DOI 10.1021/nl9037278

  View details for Web of Science ID 000276557100024

  View details for PubMedID 20230043

• Spatially resolved Raman spectroscopy on indium-catalyzed core-shell germanium nanowires: size effects NANOTECHNOLOGY Xiang, Y., Zardo, I., Cao, L. Y., Garma, T., Heiss, M., Morante, J. R., Arbiol, J., Brongersma, M. L., Morral, A. F. 2010; 21 (10)

  Abstract

  The structure of indium-catalyzed germanium nanowires is investigated by atomic force microscopy, scanning confocal Raman spectroscopy and transmission electron microscopy. The nanowires are formed by a crystalline core and an amorphous shell. We find that the diameter of the crystalline core varies along the nanowire, down to few nanometers. Phonon confinement effects are observed in the regions where the crystalline region is the thinnest. The results are consistent with the thermally insulating behavior of the core-shell nanowires.

  View details for DOI 10.1088/0957-4484/21/10/105703

  View details for Web of Science ID 000274572900026

  View details for PubMedID 20154375

• Plasmonics for extreme light concentration and manipulation NATURE MATERIALS Schuller, J. A., Barnard, E. S., Cai, W., Jun, Y. C., White, J. S., Brongersma, M. L. 2010; 9 (3): 193-204

  Abstract

  The unprecedented ability of nanometallic (that is, plasmonic) structures to concentrate light into deep-subwavelength volumes has propelled their use in a vast array of nanophotonics technologies and research endeavours. Plasmonic light concentrators can elegantly interface diffraction-limited dielectric optical components with nanophotonic structures. Passive and active plasmonic devices provide new pathways to generate, guide, modulate and detect light with structures that are similar in size to state-of-the-art electronic devices. With the ability to produce highly confined optical fields, the conventional rules for light-matter interactions need to be re-examined, and researchers are venturing into new regimes of optical physics. In this review we will discuss the basic concepts behind plasmonics-enabled light concentration and manipulation, make an attempt to capture the wide range of activities and excitement in this area, and speculate on possible future directions.

  View details for DOI 10.1038/NMAT2630

  View details for Web of Science ID 000274700900013

  View details for PubMedID 20168343

• Semiconductor Nanowire Optical Antenna Solar Absorbers NANO LETTERS Cao, L., Fan, P., Vasudev, A. P., White, J. S., Yu, Z., Cai, W., Schuller, J. A., Fan, S., Brongersma, M. L. 2010; 10 (2): 439-445

  Abstract

  Photovoltaic (PV) cells can serve as a virtually unlimited clean source of energy by converting sunlight into electrical power. Their importance is reflected in the tireless efforts that have been devoted to improving the electrical and structural properties of PV materials. More recently, photon management (PM) has emerged as a powerful additional means to boost energy conversion efficiencies. Here, we demonstrate an entirely new PM strategy that capitalizes on strong broad band optical antenna effects in one-dimensional semiconductor nanostructures to dramatically enhance absorption of sunlight. We show that the absorption of sunlight in Si nanowires (Si NWs) can be significantly enhanced over the bulk. The NW's optical properties also naturally give rise to an improved angular response. We propose that by patterning the silicon layer in a thin film PV cell into an array of NWs, one can boost the absorption for solar radiation by 25% while utilizing less than half of the semiconductor material (250% increase in the light absorption per unit volume of material). These results significantly advance our understanding of the way sunlight is absorbed by one-dimensional semiconductor nanostructures and provide a clear, intuitive guidance for the design of efficient NW solar cells. The presented approach is universal to any semiconductor and a wide range of nanostructures; as such, it provides a new PV platform technology.

  View details for DOI 10.1021/nl9036627

  View details for Web of Science ID 000274338800013

  View details for PubMedID 20078065

• Solving Dielectric and Plasmonic Dispersion Equations on a Pocket Calculator 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) Kekatpure, R. D., Hryciw, A. C., Barnard, E. S., Brongersma, M. L. 2010

  View details for Web of Science ID 000290513602155

• Program Committee Photonics for Solar Energy Systems (part of SPIE Photonics Europe) Brongersma, M., L. 2010
• Nanotechnology Research Directions A World Technology Evaluation Center (WTEC) study, Chicago Brongersma, Mark, L., Kekapture, Rohan, D., White, Justin, S., Brongersma, Mark, L. 2010
• Program Committee for the Annual OSA meeting on Integrated Photonics Research Brongersma, M., L. 2010
• Nature Communications Brongersma, Mark, L., Brongersma, Mark, L. 2010
• Active Plasmonic Devices Employing Extreme Light Concentration Gordon Conference on Plasmonics, New Hampshire Brongersma, Mark, L., Sukhdeo, David, S., Kang, J., Petykiewicz, J., Lee, J. H., Jung, W. S. 2010
• Program Chair for the Optical Nanostructures for Photovoltaics (PV) conference Brongersma, M., L. 2010
• Plasmonic, Semiconductor, and Dielectric Building Blocks for Nanophotonics Keynote presentation at the SPIE Annual Meeting, San Diego Brongersma, Mark, L., Chandran, A., Brongersma, Mark, L. 2010
• Recent Advances in Plasmonic Device Technologies Plenary presentation at the Annual Integrated Photonic Research (IPR) conference, Monterey Brongersma, Mark, L., Brongersma, M., L., Polman, A. 2010
• Plasmonics gets transformed Nature Nanotechnology Cai, W., Bell, L., D., Santamore, D., H., Brongersma, M., L., Atwater, H., A. 2010; 5: 485 - 486
• Silicon nanowire hybrid photovoltaics Garnett, E., C., Peters, C., Brongersma, M., Cui, Y., McGehee, M., D. 2010

  View details for DOI 10.1109/PVSC.2010.5614661,000934 - 000938

• Applications: Nanophotonics and Plasmonics WTEC (World Technology Evaluation Center) study on ‘Nanotechnology Research Directions. As the National Nanotechnology Initiative entered into its next decade, WTEC carried out a study to assess the progress made and to anticipate future challenges and opportunities for research in nanotechnology. Hu, E., L., Brongersma, M., L., Baca, A. Springer. 2010: 1
• Plasmonics: A Focus on Light Concentration Keynote presentation at the SPIE Annual Meeting, San Diego Brongersma, Mark, L., Brongersma, M., L., Bell, L., D., Atwater, H., A. 2010
• The Case for Plasmonics Science Brongersma, M. L. 2010; 328: 440-441
• Plasmonic Solar Cells with Broadband Absorption Enhancements 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) Pala, R. A., Barnard, E. S., White, J. S., Brongersma, M. L. 2010

  View details for Web of Science ID 000290513603092

• Plasmonic Solar Cells with Broadband Absorption Enhancements 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS) Pala, R. A., Barnard, E. S., White, J. S., Brongersma, M. L. 2010

  View details for Web of Science ID 000290513602295

• PLASMONICS Electrifying plasmonics on silicon NATURE MATERIALS Hryciw, A., Jun, Y. C., Brongersma, M. L. 2010; 9 (1): 3-4

  View details for DOI 10.1038/nmat2598

  View details for Web of Science ID 000272854800007

  View details for PubMedID 20019659

• Electrifying plasmonics on silicon Nature Materials Hryciw, A., Coenen, T., Vesseur, Ernst, Jan R., Polman, A., Brongersma, Mark, L. 2010; 9: 3-4
• Passive Building Blocks for Plasmonics Nanocircuits with Three-dimensional Slot Waveguides Cai, W., Brongersma, M. L. IEEE. 2010

  View details for Web of Science ID 000290513603089

• SILICON NANOWIRE HYBRID PHOTOVOLTAICS Garnett, E. C., Peters, C., Brongersma, M., Cui, Y., McGehee, M. IEEE. 2010: 934-938

  View details for Web of Science ID 000287579501035

• Mid-IR plasmonic antennas on silicon-rich oxinitride absorbing substrates: Nonlinear scaling of resonance wavelengths with antenna length APPLIED PHYSICS LETTERS Sikola, T., Kekatpure, R. D., Barnard, E. S., White, J. S., Van Dorpe, P., Brinek, L., Tomanec, O., Zlamal, J., Lei, D. Y., Sonnefraud, Y., Maier, S. A., Humlicek, J., Brongersma, M. L. 2009; 95 (25)

  View details for DOI 10.1063/1.3278593

  View details for Web of Science ID 000273037700048

• Solving dielectric and plasmonic waveguide dispersion relations on a pocket calculator OPTICS EXPRESS Kekatpure, R. D., Hryciw, A. C., Barnard, E. S., Brongersma, M. L. 2009; 17 (26): 24112-24129

  Abstract

  We present a robust iterative technique for solving complex transcendental dispersion equations routinely encountered in integrated optics. Our method especially befits the multilayer dielectric and plasmonic waveguides forming the basis structures for a host of contemporary nanophotonic devices. The solution algorithm ports seamlessly from the real to the complex domain--i.e., no extra complexity results when dealing with leaky structures or those with material/metal loss. Unlike several existing numerical approaches, our algorithm exhibits markedly-reduced sensitivity to the initial guess and allows for straightforward implementation on a pocket calculator.

  View details for Web of Science ID 000273156200081

  View details for PubMedID 20052123

• General properties of dielectric optical antennas OPTICS EXPRESS Schuller, J. A., Brongersma, M. L. 2009; 17 (26): 24084-24095

  Abstract

  Using Mie theory we derive a number of general results concerning the resonances of spherical and cylindrical dielectric antennas. Specifically, we prove that the peak scattering cross-section of radiation-limited antennas depends only on the resonance frequency and thus is independent of refractive index and size, a result which is valid even when the resonator is atomic-scale. Furthermore, we derive scaling limits for the bandwidth of dielectric antennas and describe a cylindrical mode which is unique in its ability to support extremely large bandwidths even when the particle size is deeply subwavelength. Finally, we show that higher Q antennas may couple more efficiently to an external load, but the optimal absorption cross-section depends only on the resonance frequency.

  View details for Web of Science ID 000273156200078

  View details for PubMedID 20052120

• Compact, High-Speed and Power-Efficient Electrooptic Plasmonic Modulators NANO LETTERS Cai, W., White, J. S., Brongersma, M. L. 2009; 9 (12): 4403-4411

  Abstract

  CMOS compatible electrooptic plasmonic modulators are slated to be key components in chip-scale photonic circuits. In this work, we investigate detailed design and optimization protocols for electrooptic plasmonic modulators that are suitable for free-space coupling and on-chip integration. The metallic structures in the proposed devices offer simultaneous electric and optical functions. The resonance-enhanced nonlinear interaction and submicrometer-footprint of these devices meet the stringent requirements for future CMOS modulators, allowing for high-speed operation (>100 GHz) with a decent modulation depth (>3 dB) and moderate insertion loss (<3 dB) at a very low swing voltage ( approximately 1 V) and power dissipation ( approximately 1 fJ/bit). The realization of the proposed structures appears feasible with current materials and lithographic techniques.

  View details for DOI 10.1021/nl902701b

  View details for Web of Science ID 000272395400077

  View details for PubMedID 19827771

• Optical antenna thermal emitters NATURE PHOTONICS Schuller, J. A., Taubner, T., Brongersma, M. L. 2009; 3 (11): 658-661

  View details for DOI 10.1038/NPHOTON.2009.188

  View details for Web of Science ID 000272302700013

• Near-infrared free-carrier absorption in silicon nanocrystals OPTICS LETTERS Kekatpure, R. D., Brongersma, M. L. 2009; 34 (21): 3397-3399

  Abstract

  We report quantification of the free-carrier absorption (FCA) cross section in silicon nanocrystals embedded in a thin SiO(2) film at 1540 nm using a collinear pump-probe method. To this end, we measured the pump-intensity dependence of both the light transmission through the film and the photoexcited carrier density in the nanocrystals. From these measurements, we extracted a FCA cross section of sigma(FCA)=(3.6+/-1.4)x10(-17) cm(2), consistent with previous results in the visible range and the known lambda(2) scaling behavior of this quantity. Given the rapidly rising prevalence of silicon-based active photonic devices, our finding assumes particular significance for Si-nanocrystal-sensitized rare-earth-atom lasers and all optical switches at important telecom wavelengths.

  View details for Web of Science ID 000271374600050

  View details for PubMedID 19881606

• Side-coupled cavity model for surface plasmon-polariton transmission across a groove OPTICS EXPRESS Liu, J. S., White, J. S., Fan, S., Brongersma, M. L. 2009; 17 (20): 17837-17848

  Abstract

  We demonstrate that the transmission properties of surface plasmon-polaritons (SPPs) across a rectangular groove in a metallic film can be described by an analytical model that treats the groove as a side-coupled cavity to propagating SPPs on the metal surface. The coupling efficiency to the groove is quantified by treating it as a truncated metal-dielectric-metal (MDM) waveguide. Finite-difference frequency-domain (FDFD) simulations and mode orthogonality relations are employed to derive the basic scattering coefficients that describe the interaction between the relevant modes in the system. The modeled SPP transmission and reflection intensities show excellent agreement with full-field simulations over a wide range of groove dimensions, validating this intuitive model. The model predicts the sharp transmission minima that occur whenever an incident SPP resonantly couples to the groove. We also for the first time show the importance of evanescent, reactive MDM SPP modes to the transmission behavior. SPPs that couple to this mode are resonantly enhanced upon reflection from the bottom of the groove, leading to high field intensities and sharp transmission minima across the groove. The resonant behavior exhibited by the grooves has a number of important device applications, including SPP mirrors, filters, and modulators.

  View details for Web of Science ID 000270295300065

  View details for PubMedID 19907571

• Design of Plasmonic Thin-Film Solar Cells with Broadband Absorption Enhancements ADVANCED MATERIALS Pala, R. A., White, J., Barnard, E., Liu, J., Brongersma, M. L. 2009; 21 (34): 3504-?

  View details for DOI 10.1002/adma.200900331

  View details for Web of Science ID 000270380100009

• Engineering light absorption in semiconductor nanowire devices NATURE MATERIALS Cao, L., White, J. S., Park, J., Schuller, J. A., Clemens, B. M., Brongersma, M. L. 2009; 8 (8): 643-647

  Abstract

  The use of quantum and photon confinement has enabled a true revolution in the development of high-performance semiconductor materials and devices. Harnessing these powerful physical effects relies on an ability to design and fashion structures at length scales comparable to the wavelength of electrons (approximately 1 nm) or photons (approximately 1 microm). Unfortunately, many practical optoelectronic devices exhibit intermediate sizes where resonant enhancement effects seem to be insignificant. Here, we show that leaky-mode resonances, which can gently confine light within subwavelength, high-refractive-index semiconductor nanostructures, are ideally suited to enhance and spectrally engineer light absorption in this important size regime. This is illustrated with a series of individual germanium nanowire photodetectors. This notion, together with the ever-increasing control over nanostructure synthesis opens up tremendous opportunities for the realization of a wide range of high-performance, nanowire-based optoelectronic devices, including solar cells, photodetectors, optical modulators and light sources.

  View details for DOI 10.1038/NMAT2477

  View details for Web of Science ID 000268288000016

  View details for PubMedID 19578337

• Nonradiative recombination in strongly interacting silicon nanocrystals embedded in amorphous silicon-oxide films PHYSICAL REVIEW B Rowlette, J. A., Kekatpure, R. D., Panzer, M. A., Brongersma, M. L., Goodson, K. E. 2009; 80 (4)

  View details for DOI 10.1103/PhysRevB.80.045314

  View details for Web of Science ID 000268618100073

• Single crystalline and core-shell indium-catalyzed germanium nanowires-a systematic thermal CVD growth study NANOTECHNOLOGY Xiang, Y., Cao, L., Conesa-Boj, S., Estrade, S., Arbiol, J., Peiro, F., Heiss, M., Zardo, I., Morante, J. R., Brongersma, M. L., Fontcuberta i Morral, A. 2009; 20 (24)

  Abstract

  Germanium nanowires were synthesized using thermal chemical vapor deposition (CVD) and indium as a catalyst. The process parameter space for successful growth was studied. By optimizing the growth temperature and gas pressure, high aspect ratio germanium nanowires have been obtained. Scanning electron microscopy investigations indicate that the final diameter of the nanowires is strongly influenced by the growth temperature and the germane partial pressure. High resolution transmission electron microscopy reveals that nanowires grow either as high quality single crystalline, or with a high quality single-crystalline core and a concentric amorphous shell. The occurrence of these two morphologies is found to only depend on the wire diameter. Chemical analysis of the nanowire tip indicates the presence of indium, validating its role as a catalyst. Raman spectroscopy measurements reveal a higher incidence of core-shell structures for nanowires synthesized at 30 Torr and indicate the presence of tensile strain. These results are important towards obtaining high quality germanium nanowires without the use of gold as a catalyst, which is known to degrade the wires' electrical and optical properties.

  View details for DOI 10.1088/0957-4484/20/24/245608

  View details for Web of Science ID 000266436500024

  View details for PubMedID 19471084

• Energy transfer in nanowire solar cells with photon-harvesting shells Peters, C. H., Guichard, A. R., Hryciw, A. C., Brongersma, M. L., McGehee, M. D. AMER INST PHYSICS. 2009

  View details for DOI 10.1063/1.3153281

  View details for Web of Science ID 000267599600137

• Broadband enhancement of light emission in silicon slot waveguides OPTICS EXPRESS Jun, Y. C., Briggs, R. M., Atwater, H. A., Brongersma, M. L. 2009; 17 (9): 7479-7490

  Abstract

  We investigate the light emission properties of electrical dipole emitters inside 2-dimensional (2D) and 3-dimensional (3D) silicon slot waveguides and evaluate the spontaneous emission enhancement (F(p)) and waveguide coupling ratio (beta). Under realistic conditions, we find that greater than 10-fold enhancement in F(p) can be achieved, together with a beta as large as 0.95. In contrast to the case of high Q optical resonators, such performance enhancements are obtained over a broad wavelength region, which can cover the entire emission spectrum of popular optical dopants such as Er. The enhanced luminescence efficiency and the strong coupling into a limited set of well-defined waveguide modes enables a new class of power-efficient, CMOS-compatible, waveguide-based light sources.

  View details for Web of Science ID 000266381700063

  View details for PubMedID 19399126

• Synthesis parameter space of bismuth catalyzed germanium nanowires APPLIED PHYSICS LETTERS Xiang, Y., Cao, L., Arbiol, J., Brongersma, M. L., Fontcuberta i Morral, A. 2009; 94 (16)

  View details for DOI 10.1063/1.3116625

  View details for Web of Science ID 000265823300056

• Metal-dielectric-metal plasmonic waveguide devices for manipulating light at the nanoscale CHINESE OPTICS LETTERS Veronis, G., Yu, Z., Kocabas, S. E., Miller, D. A., Brongersma, M. L., Fang, S. 2009; 7 (4): 302-308

  View details for DOI 10.3788/COL20090704.0302

  View details for Web of Science ID 000266970900011

• Extraordinary optical absorption through subwavelength slits OPTICS LETTERS White, J. S., Veronis, G., Yu, Z., Barnard, E. S., Chandran, A., Fan, S., Brongersma, M. L. 2009; 34 (5): 686-688

  Abstract

  We report on the ability of resonant plasmonic slits to efficiently concentrate electromagnetic energy into a nanoscale volume of absorbing material placed inside or directly behind the slit. This gives rise to extraordinary optical absorption characterized by an absorption enhancement factor that well exceeds the enhancements seen for extraordinary optical transmission through slits. A semianalytic Fabry-Perot model for the resonant absorption is developed and shown to quantitatively agree with full-field simulations. We show that absorption enhancements of nearly 1000% can be realized at 633 nm for slits in aluminum films filled with silicon. This effect can be utilized in a wide range of applications, including high-speed photodetectors, optical lithography and recording, and biosensors.

  View details for Web of Science ID 000264522400046

  View details for PubMedID 19252593

• Plasmon-enhanced emission from optically-doped MOS light sources OPTICS EXPRESS Hryciw, A. C., Jun, Y. C., Brongersma, M. L. 2009; 17 (1): 185-192

  Abstract

  We evaluate the spontaneous emission rate (Purcell) enhancement for optically-doped metal-dielectric-semiconductor light-emitting structures by considering the behavior of a semiclassical oscillating point dipole placed within the dielectric layer. For a Ag-SiO(2)-Si structure containing emitters at the center of a 20-nm-thick SiO(2) layer, spontaneous emission rate enhancements of 40 to 60 can be reached in the wavelength range of 600 to 1800 nm, far away from the surface plasmon resonance; similar enhancements are also possible if Al is used instead of Ag. For dipoles contained in the thin oxide layer of a Ag-SiO(2)-Si-SiO(2) structure, the emission exhibits strong preferential coupling to a single well-defined Si waveguide mode. This work suggests a means of designing a new class of power-efficient, high-modulation-speed, CMOS-compatible optical sources that take full advantage of the excellent electrical properties and plasmon-enhanced op cal properties afforded by MOS devices.

  View details for Web of Science ID 000262220300021

  View details for PubMedID 19129887

• Ultrafast developments NATURE PHOTONICS Cao, L., Brongersma, M. L. 2009; 3 (1): 12-13

  View details for DOI 10.1038/nphoton.2008.259

  View details for Web of Science ID 000262394500007

• Plasmonics, Light Localization, and Metamaterials Brongersma, M., L. 2009
• Nanoplasmonics Tutorial given at the open house of the center of optical technologies at Lehigh University Brongersma, Mark, L., Jun, Y. C., Brongersma, Mark, L. 2009
• Nanoplasmonics: Components, Devices, and Circuits Plasmonic Nanoguides and Circuits Brongersma, Mark, L., Schuller, Jon, A., White, J., Jun, Y. C., Bozhevolnyi, Sergey, I., Søndergaard, T. edited by Bozhevolnyi, S. I. World Scientific. 2009: 1
• Materials Research Society Symposium Proceedings edited by Negro, L., Dal, Brongersma, M., L. 2009
• Program Committee Surface Plasmon Photonics (SPP) 4 Brongersma, M., L. 2009
• Guest Editor for Plasmonics and Metamaterials issue for the Journal of the Optical Society of America Brongersma, Mark, L., Barnard, E., Cai, W., Jun, Y. C., White, J., Brongersma, Mark, L. 2009
• Active Plasmonics Ultrafast Developments Nature Photonics Cao, L., Zeltzer, G., Ruiz, R., Thomann, I., Lee, H., Brongersma, Mark, L. 2009; 12: 3
• Plasmonics: The Next Wave of Chipscale Technologies Brongersma, M., L. 2009
• Program Committee Near-Field Optics (NFO10) Conference Brongersma, M., L. 2009
• Program Committee Nanometa-2009 Brongersma, M., L. 2009
• Plasmonics and Metamaterials: Introduction J. Opt. Soc. Am. B26, PM1 Boardman, A., Bell, L., D., Brongersma, M., L., Atwater, H., A. 2009; B26, PM1
• Plasmonics Short course at the Conference on Lasers and Electro-optics CLEO Europe, Munich, Germany Brongersma, Mark, L., Zia, R., Yanik, M., F., Fan, S., Brongersma, M., L. 2009
• Planar Lenses Based on Nanoscale Slit Arrays in a Metallic Film 2009 CONFERENCE ON LASERS AND ELECTRO-OPTICS AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2009), VOLS 1-5 Verslegers, L., Catrysse, P. B., Yu, Z., White, J. S., Barnard, E. S., Brongersma, M. L., Fan, S. 2009: 3224-3225

  View details for Web of Science ID 000274751302598

• Planar Lenses Based on Nanoscale Slit Arrays in a Metallic Film NANO LETTERS Verslegers, L., Catrysse, P. B., Yu, Z., White, J. S., Barnard, E. S., Brongersma, M. L., Fan, S. 2009; 9 (1): 235-238

  Abstract

  We experimentally demonstrate planar lenses based on nanoscale slit arrays in a metallic film. Our lens structures consist of optically thick gold films with micron-size arrays of closely spaced, nanoscale slits of varying widths milled using a focused ion beam. We find excellent agreement between electromagnetic simulations of the design and confocal measurements on manufactured structures. We provide guidelines for lens design and show how actual lens behavior deviates from simple theory.

  View details for DOI 10.1021/nl802830y

  View details for Web of Science ID 000262519100044

  View details for PubMedID 19053795

• Temperature-dependent Auger recombination dynamics in luminescent silicon nanowires PHYSICAL REVIEW B Guichard, A. R., Kekatpure, R. D., Brongersma, M. L., Kamins, T. I. 2008; 78 (23)

  View details for DOI 10.1103/PhysRevB.78.235422

  View details for Web of Science ID 000262245400108

• Quantification of Free-Carrier Absorption in Silicon Nanocrystals with an Optical Microcavity NANO LETTERS Kekatpure, R. D., Brongersma, M. L. 2008; 8 (11): 3787-3793

  Abstract

  We present a highly sensitive and accurate microcavity-based technique to quantify the free-carrier absorption (FCA) cross-section of semiconductor quantum-dot ensembles. The procedure is based on measuring the pump-intensity-dependent broadening of the whispering gallery modes (WGMs) of microdisk resonators. We have applied this technique to determine the FCA cross-section of Si nanocrystals (Si-ncs) in the visible-near-infrared wavelength range. Our procedure accounts for the size distribution effects by including the measured wavelength dependence of the excitation cross-section and the decay rate of photoexcited carriers in the analysis. By monitoring the WGM widths at various wavelengths in the 700-900 nm wavelength range, we found that the FCA cross-section follows an approximately quadratic wavelength dependence. The magnitude of the FCA cross-section of Si nanocrystals was determined to be a factor of 7 higher than that in bulk Si. For this reason, these findings have important implications for the design of Si-based lasers and all-optical switching devices in which FCA plays a critical role.

  View details for DOI 10.1021/nl8021016

  View details for Web of Science ID 000260888600042

  View details for PubMedID 18826288

• Spectral properties of plasmonic resonator antennas OPTICS EXPRESS Barnard, E. S., White, J. S., Chandran, A., Brongersma, M. L. 2008; 16 (21): 16529-16537

  Abstract

  A theoretical study of the optical properties of metallic nano-strip antennas is presented. Such strips exhibit retardation-based resonances resulting from the constructive interference of counter propagating short-range surface plasmon-polaritons (SR-SPPs) that reflect from the antenna terminations. A Fabry-P erot model was formulated that successfully predicts both the peak position and spectral shape of their optical resonances. This model requires knowledge of the SR-SPP reflection amplitude and phase pickup upon reflection from the structure terminations. These quantities were first estimated using an intuitive Fresnel reflection model and then calculated exactly using full-field simulations based on the finite-difference frequency-domain (FDFD) method. With only three dimensionless scaling parameters, the Fabry-P erot model provides simple design rules for engineering resonant properties of such plasmonic resonator antennas.

  View details for Web of Science ID 000260864900028

  View details for PubMedID 18852761

• Nonresonant enhancement of spontaneous emission in metal-dielectric-metal plasmon waveguide structures PHYSICAL REVIEW B Jun, Y. C., Kekatpure, R. D., White, J. S., Brongersma, M. L. 2008; 78 (15)

  View details for DOI 10.1103/PhysRevB.78.153111

  View details for Web of Science ID 000260574400012

• Fundamental photophysics and optical loss processes in Si-nanocrystal-doped microdisk resonators PHYSICAL REVIEW A Kekatpure, R. D., Brongersma, M. L. 2008; 78 (2)

  View details for DOI 10.1103/PhysRevA.78.023829

  View details for Web of Science ID 000259263500079

• Plasmonics - Engineering optical nanoantennas NATURE PHOTONICS Brongersma, M. L. 2008; 2 (5): 270-272

  View details for DOI 10.1038/nphoton.2008.60

  View details for Web of Science ID 000256077900007

• A nonvolatile plasmonic switch employing photochromic molecules NANO LETTERS Pala, R. A., Shimizu, K. T., Melosh, N. A., Brongersma, M. L. 2008; 8 (5): 1506-1510

  Abstract

  We demonstrate a surface plasmon-polariton (SPP) waveguide all-optical switch that combines the unique physical properties of small molecules and metallic (plasmonic) nanostructures. The switch consists of a pair of gratings defined in an aluminum film coated with a 65 nm thick layer of photochromic (PC) molecules. The first grating couples a signal beam consisting of free space photons to SPPs that interact effectively with the PC molecules. These molecules can reversibly be switched between transparent and absorbing states using a free space optical pump. In the transparent (signal "on") state, the SPPs freely propagate through the molecular layer, and in the absorbing (signal "off") state, the SPPs are strongly attenuated. The second grating serves to decouple the SPPs back into a free space optical beam, enabling measurement of the modulated signal with a far-field detector. In a preliminary study, the switching behavior of the PC molecules themselves was confirmed and quantified by surface plasmon resonance spectroscopy. The excellent (16%) overlap of the SPP mode profile with the thin layer of switching molecules enabled efficient switching with power densities of approximately 6.0 mW/cm2 in 1.5 microm x 8 microm devices, resulting in plasmonic switching powers of 0.72 nW per device. Calculations further showed that modulation depths in access of 20 dB can easily be attained in optimized designs. The quantitative experimental and theoretical analysis of the nonvolatile switching behavior in this letter guides the design of future nanoscale optically or electrically pumped optical switches.

  View details for DOI 10.1021/nl0808839

  View details for Web of Science ID 000255906400042

  View details for PubMedID 18412401

• Gain-induced switching in metal-dielectric-metal plasmonic waveguides APPLIED PHYSICS LETTERS Yu, Z., Veronis, G., Fan, S., Brongersma, M. L. 2008; 92 (4)

  View details for DOI 10.1063/1.2839324

  View details for Web of Science ID 000252860400017

• Free-carrier Absorption in Si Nanocrystals Probed by Microcavity Photoluminescence 2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9 Kekatpure, R. D., Guichard, A. R., Brongersma, M. L. 2008: 1495-1496

  View details for Web of Science ID 000260498400750

• Active plasmonic components employing extreme light concentration 487, 21st Annual Meeting of the IEEE Lasers and Electro-Optics Society Brongersma, Mark, L., Cai, W., Catrysse, Peter, B. 2008; 487
• The dependence of poly-crystalline SiC mid-infrared optical properties on deposition conditions Provine, J., Roper, C., Schuller, J., A., Brongersma, M., L., Maboudian, R., Howe, R., T. 2008
• Fundamental photophysics and optical loss processes in Si-nanocrystal doped microcavities Phys. Rev. Kekatpure, Rohan, D., Shin, W., Fan, S., Brongersma, Mark, L. 2008; A 78: 23829
• Free-carrier absorption in Si nanocrystals probed by microcavity photoluminescence Kekatpure, R., D., Guichard, A., R., Brongersma, M., L. 2008
• Nanoplasmonics tutorial at the Materials Research Society (MRS) Spring Meeting, San Francisco Brongersma, Mark, L., Kekatpure, Rohan, D., Brongersma, Mark, L., Kamins, Theodore, I. 2008
• Plasmonics Bridging the Gap Between Microphotonics and Nanoelectronics Brongersma, M., L. 2008
• Photophysics of Si nanostructures: ensembles and single particles Guichard, A., R., Kekatpure, R., D., Brongersma, M., L. 2008
• Gain-induced switching in metal-dielectric-metal plasmonic waveguides Yu, Z., Veronis, G., Brongersma, M., L., Fan, S. 2008
• Recent Progress in Plasmonics 2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9 Brongersma, M. L. 2008: 3417-3418

  View details for Web of Science ID 000260498401702

• Photophysics of Si nanostructures: ensembles and single particles 2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9 Guichard, A. R., Kekatpure, R. D., Brongersma, M. L. 2008: 1331-1332

  View details for Web of Science ID 000260498400668

• The Dependence of Poly-crystalline SiC Mid-Infrared Optical Properties on Deposition Conditions 2008 IEEE/LEOS INTERNATIONAL CONFERENCE ON OPTICAL MEMS AND NANOPHOTONICS Provine, J., Roper, C., Schuller, J. A., Brongersma, M. L., Maboudian, R., Howe, R. T. 2008: 182-183

  View details for Web of Science ID 000264556700092

• Plasmon-assisted local temperature control to pattern individual semiconductor nanowires and carbon nanotubes NANO LETTERS Cao, L., Barsic, D. N., Guichard, A. R., Brongersma, M. L. 2007; 7 (11): 3523-3527

  Abstract

  We demonstrate a new versatile strategy to rapidly heat and cool subdiffraction-limited volumes of material with a focused light beam. The local temperature rise is obtained by exploiting the unique optical properties of metallic nanostructures that facilitate efficient light-to-heat conversion through the excitation of surface plasmons (collective electron oscillations). By locally heating nanoscale metallic catalysts, growth of semiconductor nanowires and carbon nanotubes can be initiated and controlled at arbitrarily prespecified locations and down to the single nanostructure level in a room-temperature chamber. This local heating strategy can be orders of magnitude (>10(5)) more energy efficient than conventional chemical vapor deposition (CVD) tools in which an entire chamber/substrate is heated. For these reasons, it has great potential for use in process- and energy-efficient assembly of nanowires into complementary metal-oxide-semiconductor (CMOS) compatible device architectures. In general, the high degree of spatial and temporal control over nanoscale thermal environments afforded by this method inspires new pathways for manipulating a range of important thermally stimulated processes and the development of novel photothermal devices.

  View details for DOI 10.1021/nl0722370

  View details for Web of Science ID 000251059800049

  View details for PubMedID 17963415

• Plasmonics - the missing link between nanoelectronics and microphotonics APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING Brongersma, M. L., Zia, R., Schuller, J. A. 2007; 89 (2): 221-223

  View details for DOI 10.1007/s00339-007-4151-1

  View details for Web of Science ID 000249016500001

• Dielectric metamaterials based on electric and magnetic resonances of silicon carbide particles PHYSICAL REVIEW LETTERS Schuller, J. A., Zia, R., Taubner, T., Brongersma, M. L. 2007; 99 (10)

  Abstract

  Silicon carbide particles exhibit both electric and magnetic optical resonances, allowing unexplored dielectric metamaterial designs. Experimental extinction spectra and Mie theory calculations of single microscale rod-shaped particles reveal three observable midinfrared resonant modes. Two of the modes are degenerate, with a frequency that can be tuned according to a resonance condition derived within the Letter. The existence of both electric and magnetic resonances may enable a novel negative refractive index metamaterial design.

  View details for DOI 10.1103/PhysRevLett.99.107401

  View details for Web of Science ID 000249324100031

  View details for PubMedID 17930407

• Surface plasmon polariton analogue to Young's double-slit experiment NATURE NANOTECHNOLOGY Zia, R., Brongersma, M. L. 2007; 2 (7): 426-429

  Abstract

  When a light wave strikes a metal film it can, under appropriate conditions, excite a surface plasmon polariton (SPP)--a surface electromagnetic wave that is coupled to the free electrons in the metal. Such SPPs are involved in a wide range of phenomena, including nanoscale optical waveguiding, perfect lensing, extraordinary optical transmission, subwavelength lithography and ultrahigh-sensitivity biosensing. However, before the full potential of technology based on SPPs (termed 'plasmonics') can be realized, many fundamental questions regarding the interaction between light and matter at the nanoscale need to be answered. For over 200 years, Young's double-slit experiment has been a valuable pedagogical tool for demonstrating the wave nature of light. Here, we perform a double-slit experiment with SPPs to reveal the strong analogy between SPP propagation along the surface of metallic structures and light propagation in conventional dielectric components (such as glass waveguides). This allows us to construct a general framework to describe the propagation, diffraction and interference of SPPs. It also suggests that there is an effective diffraction limit for the lateral confinement of SPPs on metal stripe waveguides, and justifies the use of well-developed concepts from conventional optics and photonics in the design of new plasmonic devices.

  View details for DOI 10.1038/nnano.2007.185

  View details for Web of Science ID 000248302500013

  View details for PubMedID 18654327

• Metal-dielectric slot-waveguide structures for the propagation of surface plasmon polaritons at 1.55 mu m IEEE JOURNAL OF QUANTUM ELECTRONICS Feng, N., Brongersma, M. L., Dal Negro, L. 2007; 43 (5-6): 479-485

  View details for DOI 10.1109/JQE.2007.897913

  View details for Web of Science ID 000246894300018

• Omnidirectional light emission via surface plasmon polaritons APPLIED PHYSICS LETTERS Liu, J. S., Brongersma, M. L. 2007; 90 (9)

  View details for DOI 10.1063/1.2437053

  View details for Web of Science ID 000244591700016

• Thin film patterning by surface-plasmon-induced thermocapillarity APPLIED PHYSICS LETTERS Roentzsch, L., Heinig, K., Schuller, J. A., Brongersma, M. L. 2007; 90 (4)

  View details for DOI 10.1063/1.2432282

  View details for Web of Science ID 000243789600122

• High Q/V microdisk resonators for observation of Purcell effect in silicon nanocrystals 2007 4TH IEEE INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS Kekatpure, R. D., Guichard, A. R., Brongersma, M. L. 2007: 259-261

  View details for Web of Science ID 000253465500087

• Auger recombination in luminescent, CMOS-compatible Si nanowires Guichard, A., R., Kekatpure, R., D., Brongersma, M., L. 2007
• Development and Near-field Characterization of Surface Plasmon Waveguides Surface Plasmon Nanophotonics Weeber, J., C., Baudrion, A., L, González, M., U., Dereux, A., Zia, R., Brongersma, Mark, L. edited by Brongersma, Mark, L., Kik, Pieter, G. 2007: 271
• Metal-dielectric slot waveguide structures for the propagation of surface plasmon polaritons at 1.55 µm IEEE Journ. Of Quant. Electron. Feng, N., White, Justin, S., Fan, S., Brongersma, Mark, L. 2007; 43: 479- 485
• High Q/V microdisk resonators for observation of purcell effect in silicon nanocrystals Kekatpure, R., D., Guichard, A., R., Brongersma, M., L. 2007
• Surface Plasmon Nanophotonics Surface Plasmon Nanophotonics Kik, Pieter, G., Brongersma, Mark, L. edited by Brongersma, Mark, L., Kik, Pieter, G. 2007: 271
• Plasmonics – A New Wave of Opportunities Briefing of National Academies Committee on Nanophotonics Accessibility and Applicability, Washington DC Brongersma, Mark, L., Brongersma, M., L., Kik, P., G., Atwater, H., A. 2007
• Midinfrared Dielectric Metamaterials Based on Electric and Magnetic Mie Resonances of Silicon Carbide Particles Phys. Rev. Lett. Schuller, J., A., Guichard, A., R., Hryciw, A., C., Brongersma, M., L., McGehee, M., D. 2007; 99: 107401
• Design of mid-infrared photodetectors enhanced by surface plasmons on grating structures Yu, Z., Veronis, G., Brongersma, M., L., Fan, S. 2007
• Scientific Advisory Board for the journal "Metamaterials" Brongersma, Mark, L., Polman, A., Min, K., S., Boer, E., Tambo, T., Atwater, H., A. 2007
• Plasmonics – The Next Wave of Chipscale Technologies NanoMaterials for Defense Applications Symposium, Organized by the US Denfense Agencies, San Diego Brongersma, Mark, L., Brongersma, M., L., Kik, P., G., Meltzer, S., Requicha, A., A.G., Atwater, H., A. 2007
• Chipscale Plasmonics and Nanophotonics DARPA Components from Metamaterials Workshop, Washington Brongersma, Mark, L., Seo, M., Huo, Y., Sarmiento, T., Harris, James, S., Brongersma, Mark, L. 2007
• Design of mid-infrared photodetectors enhanced by surface plasmons on grating structures INTEGRATED OPTICS: DEVICES, MATERIALS, AND TECHNOLOGIES XI Yu, Z., Veronis, G., Brongersma, M. L., Fan, S. 2007; 6475

  View details for DOI 10.1117/12.698016

  View details for Web of Science ID 000246061700022

• Auger recombination in luminescent, CMOS-compatible Si nanowires 2007 4TH IEEE INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS Guichard, A. R., Kekatpure, R. D., Brongersma, M. L. 2007: 250-252

  View details for Web of Science ID 000253465500084

• Excitons and Plasmon Resonances in Nanostructures - Fundamentals, synthesis, and applications Brongersma, M., L. 2007
• Plasmonics - The missing link between nanoelectronics and microphotonics PIERS 2007 BEIJING: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM, PTS I AND II, PROCEEDINGS Brongersma, M. L., Zia, R., Schuler, J. 2007: 1043-1045

  View details for Web of Science ID 000246922600230

• Probing molecular junctions using surface plasmon resonance spectroscopy NANO LETTERS Shimizu, K. T., Pala, R. A., Fabbri, J. D., Brongersma, M. L., Melosh, N. A. 2006; 6 (12): 2797-2803

  Abstract

  The optical absorption spectra of nanometer-thick organic films and molecular monolayers sandwiched between two metal contacts have been measured successfully using surface plasmon resonance spectroscopy (SPRS). The electric field within metal-insulator (organic)-metal (MIM) cross-bar junctions created by surface plasmon-polaritons excited on the metal surface allows sensitive measurement of molecular optical properties. Specifically, this spectroscopic technique extracts the real and imaginary indices of the organic layer for each wavelength of interest. The SPRS sensitivity was calculated for several device architectures, metals, and layer thicknesses to optimize the organic film absorptivity measurements. Distinct optical absorption features were clearly observed for R6G layers as thin as a single molecular monolayer between two metal electrodes. This method also enables dynamic measurement of molecular conformation inside metallic junctions, as shown by following the optical switching of a thin spiropyran/polymer film upon exposure to UV light. Finally, optical and electrical measurements can be made simultaneously to study the effect of electrical bias and current on molecular conformation, which may have significant impact in areas such as molecular and organic electronics.

  View details for DOI 10.1021/nl061893h

  View details for Web of Science ID 000242786500029

  View details for PubMedID 17163708

• Plasmon-assisted chemical vapor deposition NANO LETTERS Boyd, D. A., Greengard, L., Brongersma, M., El-Naggar, M. Y., Goodwin, D. G. 2006; 6 (11): 2592-2597

  Abstract

  We introduce a new chemical vapor deposition (CVD) process that can be used to selectively deposit materials of many different types. The technique makes use of the plasmon resonance in nanoscale metal structures to produce the local heating necessary to initiate deposition when illuminated by a focused low-power laser. We demonstrate the technique, which we refer to as plasmon-assisted CVD (PACVD), by patterning the spatial deposition of PbO and TiO(2) on glass substrates coated with a dispersion of 23 nm gold particles. The morphology of both oxide deposits is consistent with local laser-induced heating of the gold particles by more than 150 degrees C. We show that temperature changes of this magnitude are consistent with our analysis of the heat-loss mechanisms. The technique is general and can be used to spatially control the deposition of virtually any material for which a CVD process exists.

  View details for DOI 10.1021/nl062061m

  View details for Web of Science ID 000241856700036

  View details for PubMedID 17090097

• Silicon-nanocrystal-coated silica microsphere thermooptical switch IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS Tewary, A., Digonnet, M. J., Sung, J., Shin, J. H., Brongersma, M. L. 2006; 12 (6): 1476-1479

  View details for DOI 10.1109/JSTQE.2006.885389

  View details for Web of Science ID 000243013700020

• Cavity Q measurements of silica microspheres with nanocluster silicon active layer IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS Sung, J., Tewary, A., Brongersma, M. L., Shin, J. H. 2006; 12 (6): 1388-1393

  View details for DOI 10.1109/JSTQE.2006.885631

  View details for Web of Science ID 000243013700011

• Design of midinfrared photodetectors enhanced by surface plasmons on grating structures APPLIED PHYSICS LETTERS Yu, Z., Veronis, G., Fan, S., Brongersma, M. L. 2006; 89 (15)

  View details for DOI 10.1063/1.2360896

  View details for Web of Science ID 000241247900016

• Near-field characterization of guided polariton propagation and cutoff in surface plasmon waveguides PHYSICAL REVIEW B Zia, R., Schuller, J. A., Brongersma, M. L. 2006; 74 (16)

  View details for DOI 10.1103/PhysRevB.74.165415

  View details for Web of Science ID 000241723700101

• Tunable light emission from quantum-confined excitons in TiSi2-catalyzed silicon nanowires NANO LETTERS Guichard, A. R., Barsic, D. N., Sharma, S., Kamins, T. I., Brongersma, M. L. 2006; 6 (9): 2140-2144

  Abstract

  Visible and near-infrared photoluminescence (PL) at room temperature is reported from Si nanowires (NWs) grown by chemical vapor deposition from TiSi2 catalyst sites. NWs grown with average diameter of 20 nm were etched and oxidized to thin and passivate the wires. The PL emission blue shifted continuously with decreasing nanowire diameter. Slowed oxidation was observed for small nanowire diameters and provides a high degree of control over the emission wavelength. Transmission electron microscopy, PL, and time-resolved PL data are fully consistent with quantum confinement of charge carriers in the Si nanowire core being the source of luminescence. These light emitting nanowires could find application in future CMOS-compatible photonic devices.

  View details for DOI 10.1021/nl061287m

  View details for Web of Science ID 000240465100054

  View details for PubMedID 16968040

• Plasmonics: the next chip-scale technology MATERIALS TODAY Zia, R., Schuller, J. A., Chandran, A., Brongersma, M. L. 2006; 9 (7-8): 20-27

  View details for Web of Science ID 000242622700019

• Controlling defect and Si nanoparticle luminescence from silicon oxynitride films with CO2 laser annealing APPLIED PHYSICS LETTERS Tewary, A., Kekatpure, R. D., Brongersma, M. L. 2006; 88 (9)

  View details for DOI 10.1063/1.2178769

  View details for Web of Science ID 000235736300080

• High-Q whispering gallery modes in wet etched silica microdisk resonators containing silicon nanocrystals 2006 3RD IEEE INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS Kekatpure, R. D., Brongersma, M. L. 2006: 22-24

  View details for Web of Science ID 000244096100008

• Synthesis and optimization of luminescent Si nanoparticles by CO2 laser annealing and Si nanocrystal light emission in microcavities Kekatpure, R., D., Tewary, A., Brongersma, M., L. 2006
• Guiding Properties of Surface Plasmon-Polariton Waveguides "Nanophotonics with Surface Plasmons” and part of a Elsevier Series on “Advances in Nano-Optics and Nano-Photonics”. Zia, R., Brongersma, M. edited by Shalaev, V., Kawata, S. 2006: 1
• Light emitting silicon nanowires for photonic device applications Guichard, A., R., Brongersma, M., L., Kamins, T., Sharma, S. 2006
• Silicon-nanocrystal-coated Silica Microsphere Thermooptical Switch Tewary, A., Digonnet, Michel, J. F., Brongersma, Mark., L., Sung, J., Shin, Jung, H. 2006
• Silicon-Based Microphotonics Brongersma, M., L. 2006
• Synthesis and optimization of luminescent Si nanoparticles by CO2 laser annealing and Si nanocrystal light emission in microcavities Kekatpure, Rohan, D., Tewary, A., Brongersma, Mark., L. 2006
• High-Q whispering gallery modes in wet etched silica microdisk resonators containing silicon nanocrystals Kekatpure, R., D., Brongersma, M., L. 2006
• Plasmon AccessScience@McGraw-Hill, http://www.accessscience.com Brongersma, Mark, L., Veronis, G., Fan, S., Brongersma, Mark, L. 2006

  View details for DOI 10.1036/1097-8542.526250

• Light emitting silicon nanowires for photonic device applications 2006 3RD IEEE INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS Guichard, A. R., Brongersma, M. L., Kamins, T., Sharma, S. 2006: 137-139

  View details for Web of Science ID 000244096100047

• Erbium-implanted silica microsphere laser Kalkman, J., Polman, A., Kippenberg, T. J., Vahala, K. J., Brongersma, M. L. ELSEVIER SCIENCE BV. 2006: 182-185

  View details for DOI 10.1016/j.nimb.2005.08.160

  View details for Web of Science ID 000236225200049

• Silicon-nanocrystal-coated silica microsphere then-nooptical switch SILICON PHOTONICS Tewary, A., Digonnet, M. J., Brongersma, M. L. 2006; 6125

  View details for DOI 10.1117/12.669392

  View details for Web of Science ID 000237274900023

• Synthesis and optimization of luminescent Si nanoparticles by CO2 laser annealing and Si nanocrystal light emission in microcavities OPTOELECTRONIC DEVICES: PHYSICS, FABRICATION, AND APPLICATION III Kekatpure, R. D., Tewary, A., Brongersma, M. L. 2006; 6368

  View details for DOI 10.1117/12.686562

  View details for Web of Science ID 000243902000001

• Design of a silicon-based field-effect electro-optic modulator with enhanced light-charge interaction OPTICS LETTERS Kekatpure, R. D., Brongersma, M. L., Shenoy, R. S. 2005; 30 (16): 2149-2151

  Abstract

  A new design for an all-silicon field-effect optical modulator in a ring resonator geometry is proposed and modeled by means of finite-element method simulations. It is shown that the optimal relative placement of the ultrathin field-effect-generated charge layers and the optical mode in the strong-confinement waveguides leads to more than an order-of-magnitude enhancement in the light-charge interaction compared with the recent predictions in the literature. We show that such an enhancement could provide optical modulation with a >7 dB extinction-ratio using a voltage swing of only 2 V, thus making our design compatible with complementary metal-oxide semiconductor technology.

  View details for Web of Science ID 000231072700033

  View details for PubMedID 16127939

• Nanoengineered silicon/silicon dioxide nanoparticle heterostructures SOLID STATE SCIENCES Ostraat, M. L., Brongersma, M., Atwater, H. A., Flagan, R. C. 2005; 7 (7): 882-890

  View details for DOI 10.1016/j.solidstatesubstances.2005.01.019

  View details for Web of Science ID 000230259500009

• Dielectric waveguide model for guided surface polaritons OPTICS LETTERS Zia, R., Chandran, A., Brongersma, M. L. 2005; 30 (12): 1473-1475

  Abstract

  Although surface polariton modes supported by finite-width interfaces can guide electromagnetic energy in three dimensions, we demonstrate for the first time to our knowledge that such modes can be modeled by the solutions of two-dimensional dielectric slab waveguides. An approximate model is derived by a ray-optics interpretation that is consistent with previous investigations of the Fresnel relations for surface polariton reflection. This model is compared with modal solutions for metal stripe waveguides obtained by full vectorial magnetic-field finite-difference methods. The field-symmetric modes of such waveguides are shown to be in agreement with the normalized dispersion relationship for analogous TE modes of dielectric slab waveguides. Lateral confinement is investigated by comparison of power-density profiles, and implications for the diffraction limit of guided polariton modes are discussed.

  View details for Web of Science ID 000229689400015

  View details for PubMedID 16007778

• Leaky and bound modes of surface plasmon waveguides PHYSICAL REVIEW B Zia, R., Selker, M. D., Brongersma, M. L. 2005; 71 (16)

  View details for DOI 10.1103/PhysRevB.71.165431

  View details for Web of Science ID 000228763100117

• Microring and microdisk optical resonators using silicon nanocrystals and erbium prepared using silicon technology Gardner, D. S., Brongersma, M. L. ELSEVIER SCIENCE BV. 2005: 804-811

  View details for DOI 10.1016/j.optmat.2004.08.017

  View details for Web of Science ID 000227621300015

• Sub-wavelength resonances in metal-dielectric-metal plasmonic structures 2005 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS (LEOS) Fan, S. H., Shin, H., Brongersma, M., Veronis, G., Shen, J. T., Catrysse, P. B. 2005: 520-521

  View details for Web of Science ID 000235109700263

• Evidence for stimulated emission in silicon nanocrystal microspheres 2005 2ND IEEE INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS Chen, H., Sung, J. Y., Tewary, A., Brongersma, M., Shin, J. H., Fauchet, P. M. 2005: 99-101

  View details for Web of Science ID 000234323300036

• Sub-wavelength resonances in metal-dielectric-metal plasmonic structures Fan, S. 2005
• Plasmonics--Nanoscale Optics and Photonics Based on Metals Brongersma, M., L. 2005
• Plasmonic functionality on Si chips Silicon Nanoelectronics and Beyond III, Workshop organized by SRC and NSF, National Science Foundation, Arlington, Virginia Brongersma, Mark, L., Brongersma, Mark, L., Atwater, H., A., Flagan, R., C. 2005
• The future of Plasmonics and Si microphotonics DARPA Frontiers on Quantum Device Engineering Workshop, Los Angeles Brongersma, Mark, L. 2005
• Design of Silicon Based Field-Effect Electro-Optic Modulator With Enhanced Light-Charge Interaction Opt. Lett. Kekatpure, Rohan, D., Schuller, Jon, A., Brongersma, Mark, L. 2005; 30: 2149-2151
• Microring and microdisk optical resonators using silicon nanocrystals and erbium prepared using silicon technology Gardner, D., S., Brongersma, M., L. 2005
• Evidence for stimulated emission in silicon nanocrystal microspheres Chen, H., Sung, I., Y., Tewary, A., Brongersma, M., L., Shin, J., H., Fauchet, P., M. 2005
• Towards CMOS Compatible Plasmonics and Nanophotonics Tutorial at NanoCommerce/SEMI NanoForum, Chicago Brongersma, Mark, L. 2005
• Geometries and materials for subwavelength surface plasmon modes JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION Zia, R., Selker, M. D., Catrysse, P. B., Brongersma, M. L. 2004; 21 (12): 2442-2446

  Abstract

  Plasmonic waveguides can guide light along metal-dielectric interfaces with propagating wave vectors of greater magnitude than are available in free space and hence with propagating wavelengths shorter than those in vacuum. This is a necessary, rather than sufficient, condition for subwavelength confinement of the optical mode. By use of the reflection pole method, the two-dimensional modal solutions for single planar waveguides as well as adjacent waveguide systems are solved. We demonstrate that, to achieve subwavelength pitches, a metal-insulator-metal geometry is required with higher confinement factors and smaller spatial extent than conventional insulator-metal-insulator structures. The resulting trade-off between propagation and confinement for surface plasmons is discussed, and optimization by materials selection is described.

  View details for Web of Science ID 000225378200024

  View details for PubMedID 15603083

• Omnidirectional resonance in a metal-dielectric-metal geometry APPLIED PHYSICS LETTERS Shin, H., Yanik, M. F., Fan, S. H., Zia, R., Brongersma, M. L. 2004; 84 (22): 4421-4423

  View details for DOI 10.1063/1.1758306

  View details for Web of Science ID 000221537500021

• New Materials for Microphotonics Brongersma, M., L. 2004
• Towards CMOS Compatible Nanophotonics and Plasmonics Brongersma, M., L. 2004
• Nanoshells: gifts in a gold wrapper NATURE MATERIALS Brongersma, M. L. 2003; 2 (5): 296-297

  View details for Web of Science ID 000182679900012

• Observation of near-field coupling in metal nanoparticle chains using far-field polarization spectroscopy PHYSICAL REVIEW B Maier, S. A., Brongersma, M. L., Kik, P. G., Atwater, H. A. 2002; 65 (19)

  View details for DOI 10.1103/PhysRevB.65.193408

  View details for Web of Science ID 000175860900034

• Electromagnetic energy transport along Yagi arrays MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS Maier, S. A., Brongersma, M. L., Atwater, H. A. 2002; 19 (1-2): 291-294

  View details for Web of Science ID 000173080700060

• Electromagnetic energy transport along Yagi arrays Mat. Sci. and Eng. Maier, Stefan, A., Pinaud, Blaise, A., Chen, Z., Clemens, Bruce, M., Jaramillo, Thomas, F., Brongersma, Mark, L. 2002; C19: 291–294
• Observation of coupled plasmon-polariton modes of plasmon waveguides for electromagnetic energy transport below the diffraction limit MATERIALS AND DEVICES FOR OPTOELECTRONICS AND MICROPHOTONICS Maier, S. A., Kik, P. G., Brongersma, M. L., Atwater, H. A., Meltzer, S., Requicha, A. A., Koel, B. E. 2002; 722: 431-436

  View details for Web of Science ID 000178623500059

• Plasmonics - A route to nanoscale optical devices ADVANCED MATERIALS Maier, S. A., Brongersma, M. L., Kik, P. G., Meltzer, S., Requicha, A. A., Atwater, H. A. 2001; 13 (19): 1501-?

  View details for Web of Science ID 000171471300025

• Models for quantitative charge imaging by atomic force microscopy JOURNAL OF APPLIED PHYSICS Boer, E. A., Bell, L. D., Brongersma, M. L., Atwater, H. A. 2001; 90 (6): 2764-2772

  View details for Web of Science ID 000170647500020

• Localized charge injection in SiO2 films containing silicon nanocrystals APPLIED PHYSICS LETTERS Boer, E. A., Brongersma, M. L., Atwater, H. A., Flagan, R. C., Bell, L. D. 2001; 79 (6): 791-793

  View details for Web of Science ID 000170223100030

• Synthesis and characterization of aerosol silicon nanocrystal nonvolatile floating-gate memory devices APPLIED PHYSICS LETTERS Ostraat, M. L., De Blauwe, J. W., Green, M. L., Bell, L. D., Brongersma, M. L., Casperson, J., Flagan, R. C., Atwater, H. A. 2001; 79 (3): 433-435

  View details for Web of Science ID 000169776000052

• Charging of single Si nanocrystals by atomic force microscopy APPLIED PHYSICS LETTERS Boer, E. A., Bell, L. D., Brongersma, M. L., Atwater, H. A., Ostraat, M. L., Flagan, R. C. 2001; 78 (20): 3133-3135

  View details for Web of Science ID 000168559600045

• Colloidal assemblies modified by ion irradiation NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS Snoeks, E., van Blaaderen, A., van Dillen, T., van Kats, C. M., Velikov, K., Brongersma, M. L., Polman, A. 2001; 178: 62-68

  View details for Web of Science ID 000169403700009

• Electromagnetic energy transport along arrays of closely spaced metal rods as an analogue to plasmonic devices APPLIED PHYSICS LETTERS Maier, S. A., Brongersma, M. L., Atwater, H. A. 2001; 78 (1): 16-18

  View details for Web of Science ID 000166122000006

• Electromagnetic energy transport below the diffraction limit in periodic metal nanostructures CONTROLLING AND USING LIGHT IN NANOMETRIC DOMAINS Maier, S. A., Kik, P. G., Brongersma, M. L., Atwater, H. A. 2001; 4456: 22-30

  View details for Web of Science ID 000175017600004

• Manipulation and Charging of Single Si Nanocrystals by Atomic Force Microscopy Appl. Phys. Lett. Boer, E., A., Taubner, T., Brongersma, Mark, L. 2001; 78: 3133
• Electromagnetic energy transfer and switching in nanoparticle chain arrays below the diffraction limit PHYSICAL REVIEW B Brongersma, M. L., Hartman, J. W., Atwater, H. A. 2000; 62 (24): 16356-16359

  View details for Web of Science ID 000166307800037

• Colloidal ellipsoids with continuously variable shape ADVANCED MATERIALS Snoeks, E., van Blaaderen, A., van Dillen, T., van Kats, C. M., Brongersma, M. L., Polman, A. 2000; 12 (20): 1511-1514

  View details for Web of Science ID 000165244300011

• Origin of MeV ion irradiation-induced stress changes in SiO2 JOURNAL OF APPLIED PHYSICS Brongersma, M. L., Snoeks, E., van Dillen, T., Polman, A. 2000; 88 (1): 59-64

  View details for Web of Science ID 000087704000010

• Formation mechanism of silver nanocrystals made by ion irradiation of Na+<-> Ag+ ion-exchanged sodalime silicate glass NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS Peters, D. P., Strohhofer, C., Brongersma, M. L., van der Elsken, J., Polman, A. 2000; 168 (2): 237-244

  View details for Web of Science ID 000087241600010

• Strong exciton-erbium coupling in Si nanocrystal-doped SiO2 APPLIED PHYSICS LETTERS Kik, P. G., Brongersma, M. L., Polman, A. 2000; 76 (17): 2325-2327

  View details for Web of Science ID 000086538700001

• Size-dependent electron-hole exchange interaction in Si nanocrystals APPLIED PHYSICS LETTERS Brongersma, M. L., Kik, P. G., Polman, A., Min, K. S., Atwater, H. A. 2000; 76 (3): 351-353

  View details for Web of Science ID 000084675100034

• Monodisperse Silica and ZnS Particles with Continuously Variable Shape Made by Ion Irradiation of Micro-Spheres Advanced Materials Snoeks, E., Cao, L., Arbiol, J., Brongersma, Mark, L., Morral, A. F. 2000; 12: 1511
• Colloidal Assemblies Modified by Ion Irradiation Nucl. Instr. and Meth. Snoeks, E., White, Justin, S., Cai, W., Brongersma, Mark, L. 2000; 178: 62
• Depth distribution of luminescent Si nanocrystals in Si implanted SiO2 films on Si JOURNAL OF APPLIED PHYSICS Brongersma, M. L., Polman, A., Min, K. S., Atwater, H. A. 1999; 86 (2): 759-763

  View details for Web of Science ID 000081171800008

• Activation energy spectra for annealing of ion irradiation induced defects in silica glasses NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS van Dillen, T., Brongersma, M. L., Snoeks, E., Polman, A. 1999; 148 (1-4): 221-226

  View details for Web of Science ID 000078575700039

• Nucl. Intrum. Methods Phys. edited by Vredenberg, A., Polman, A., Stolk, P. 1999
• Activation Energy Spectra for Annealing of Ion Irradiation-induced Defects in Silica Glasses Nucl. Instr. and Meth. van Dillen, T., Kang, J., Park, J., Liu, X., Brongersma, Mark, L. 1999; B 148: 221
• Tuning the emission wavelength of Si nanocrystals in SiO2 by oxidation APPLIED PHYSICS LETTERS Brongersma, M. L., Polman, A., Min, K. S., Boer, E., Tambo, T., Atwater, H. A. 1998; 72 (20): 2577-2579

  View details for Web of Science ID 000073611700027

• Tailoring the Optical Properties of Si Nanocrystals; Materials Issues and Nanocrystal Laser Perspectives Brongersma, M., L., Min, K., S., Boer, E., Tambo, T., Polman, A., Atwater, H., A. 1998
• Co-organizer of the Eleventh International Conference on Ion Beam Modification of Materials Brongersma, M., L. 1998
• Low energy k-dependent electronic structure of the layered magnetoresistive oxide La1.2Sr1.8Mn2O7 SCIENCE AND TECHNOLOGY OF MAGNETIC OXIDES Saitoh, T., Dessau, D. S., Park, C. H., Shen, Z. X., Villella, P., Hamada, N., Moritomo, Y., Tokura, Y. 1998; 494: 213-218

  View details for Web of Science ID 000073253400030

• Temperature dependence of MeV heavy ion irradiation-induced viscous flow in SiO2 APPLIED PHYSICS LETTERS Brongersma, M. L., Snoeks, E., Polman, A. 1997; 71 (12): 1628-1630

  View details for Web of Science ID A1997XW90700012

• Defect-related versus excitonic visible light emission from ion beam synthesized Si nanocrystals in SiO2 APPLIED PHYSICS LETTERS Min, K. S., SHCHEGLOV, K. V., Yang, C. M., Atwater, H. A., Brongersma, M. L., Polman, A. 1996; 69 (14): 2033-2035

  View details for Web of Science ID A1996VJ78300015

• The role of quantum-confined excitons vs defects in the visible luminescence of SiO2 films containing Ge nanocrystals APPLIED PHYSICS LETTERS Min, K. S., SHCHEGLOV, K. V., Yang, C. M., Atwater, H. A., Brongersma, M. L., Polman, A. 1996; 68 (18): 2511-2513

  View details for Web of Science ID A1996UG86600017

• On the Origin of Visible Luminescence from SiO2 Films containing Ge Nanocrystals Min, K., S., Shcheglov, K., V., Yang, C., M., Camata, R., P., Atwater, H., A., Brongersma, M., L. 1996
• Ion beam synthesis of planar opto-electronic devices (reprinted from Nuclear Instruments and Methods in Physics Research, vol 106, pg 393-399, 1995) ION BEAM MODIFICATION OF MATERIALS Polman, A., Snoeks, E., VANDENHOVEN, G. N., Brongersma, M. L., Serna, R., Shin, J. H., Kik, P., Radius, E. 1996: 393-399

  View details for Web of Science ID A1996BG29U00071

• On the origin of visible luminescence from SiO2 films containing Ge nanocrystals SURFACE/INTERFACE AND STRESS EFFECTS IN ELECTRONIC MATERIALS NANOSTRUCTURES Min, K. S., SHCHEGLOV, K. V., Yang, C. M., Camata, R. P., Atwater, H. A., Brongersma, M. L., Polman, A. 1996; 405: 247-252

  View details for Web of Science ID A1996BG31L00034

• Ion beam synthesis of planar opto-electronic devices NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS Polman, A., Snoeks, E., VANDENHOVEN, G. N., Brongersma, M. L., Serna, R., Shin, J. H., Kik, P., Radius, E. 1995; 106 (1-4): 393-399

  View details for Web of Science ID A1995TM52100072

• CORRELATION OF SIZE AND PHOTOLUMINESCENCE FOR GE NANOCRYSTALS IN SIO2 MATRICES MICROCRYSTALLINE AND NANOCRYSTALLINE SEMICONDUCTORS Yang, C. M., SHCHEGLOV, K. V., Brongersma, M. L., Polman, A., Atwater, H. A. 1995; 358: 181-186

  View details for Web of Science ID A1995BC88M00028

• Ion Beam Synthesis of Planar Optoelectronic Devices Polman, A., Snoeks, E., van den Hoven, G., N., Brongersma, M., L., Serna, R., Shin, J., H. 1995
• Ion Beam Synthesis of Planar Optoelectronic Devices Nucl. Instrum. and Meth. Polman, A., Hryciw, Aaron, C., Barnard, Edward, S., Brongersma, Mark, L. 1995; B 106: 393
• ION-BEAM SYNTHESIS OF LUMINESCENT SI AND GE NANOCRYSTALS IN A SILICON DIOXIDE MATRIX MATERIALS SYNTHESIS AND PROCESSING USING ION BEAMS Atwater, H. A., SHCHEGLOV, K. V., Wong, S. S., Vahala, K. J., Flagan, R. C., Brongersma, M. L., Polman, A. 1994; 316: 409-420

  View details for Web of Science ID A1994BA28H00062

• ION-BEAM SYNTHESIS OF LUMINESCENT SI AND GE NANOCRYSTALS IN A SILICON DIOXIDE MATRIX CRYSTALLIZATION AND RELATED PHENOMENA IN AMORPHOUS MATERIALS Atwater, H. A., SHCHEGLOV, K. V., Wong, S. S., Vahala, K. J., Flagan, R. C., Brongersma, M. L., Polman, A. 1994; 321: 363-374

  View details for Web of Science ID A1994BA13A00054

• Ion Beam Synthesis of Luminescent Si and Ge Nanocrystals in a Silicon Dioxide Matrix Atwater, H., A., Shcheglov, K., V., Wong, S., S., Vahala, K., J., Flagan, R., C., Brongersma, M., L. 1994