Prof. Georgios Veronis Profile

Prof. Georgios Veronis

Professor at Louisiana State Univ

SPIE Involvement:

Conference Program Committee | Author

Publications (46)

Proceedings Article | 2 October 2024 Poster + Paper

Multilayer structures based on phase-change materials for reconfigurable structural color generation

Md. Tanvir Emrose, Georgios Veronis

Proceedings Volume 13110, 131100M (2024) https://doi.org/10.1117/12.3028387

KEYWORDS: Color, Mathematical optimization, Design, Structural materials, Silver, Silicon carbide, Dielectrics, Thin films, Thermal stability, Spatial resolution

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Proceedings Article | 2 October 2024 Presentation + Paper

Switchable absorbers and multicolor pixels based on phase-change materials

Georgios Veronis, Md. Tanvir Emrose, Emily Payne, Chenglong You

Proceedings Volume 13110, 131100E (2024) https://doi.org/10.1117/12.3028381

KEYWORDS: Switching, Color, Design, Absorption, Multilayers, Mathematical optimization, Dielectrics, Crystals, Optical properties

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Proceedings Article | 4 October 2023 Poster + Paper

Multilayer broadband switchable absorbers based on phase-change materials

Md Tanvir Emrose, Emily Payne, Chenglong You, Georgios Veronis

Proceedings Volume 12647, 126470M (2023) https://doi.org/10.1117/12.2677847

KEYWORDS: Switching, Absorption, Crystals, Infrared radiation, Mathematical optimization, Optical properties, Optical components, Multilayers, Light absorption

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Proceedings Article | 4 October 2023 Presentation + Paper

Switching between topological edge states using phase-change materials

Georgios Veronis, Yin Huang, Yuecheng Shen

Proceedings Volume 12647, 1264707 (2023) https://doi.org/10.1117/12.2677837

KEYWORDS: Switching, Crystals, Systems modeling, Waveguides, Optical properties

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Proceedings Article | 3 October 2022 Presentation + Paper

Magneto-optical isolation and topological edge states at singular points in plasmonic structures

Georgios Veronis, Yin Huang, Yuecheng Shen, Vahid Foroughi Nezhad, Chenglong You

Proceedings Volume 12196, 121960C (2022) https://doi.org/10.1117/12.2633235

KEYWORDS: Waveguides, Plasmonics, Magneto-optics, Resonators, Optical isolators, Magnetism, Plasmonic waveguides

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Proceedings Article | 18 April 2022 Presentation + Paper

Design of a hybrid SET-TFET nanoscale IC for RF and microwave frequencies

Naheem Adesina, Fawwaz Hazzazi, Chintan Chavda, Georgios Veronis, Theda Daniels-Race, Jian Xu

Proceedings Volume 12045, 120450B (2022) https://doi.org/10.1117/12.2628189

KEYWORDS: Transistors, Analog filtering, Analog electronics, Linear filtering, Integrated circuits, Graphene, Integrated circuit design, Field effect transistors, Microwave radiation, Instrument modeling

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Proceedings Article | 6 August 2021 Presentation

Introducing an optoplasmonic amplifier operating in visible range and generating raman signal internally with injection seeding

Syed Mohammad Abid Hasan, Safura Sharifi, Yaser Banadaki, Georgios Veronis, Manas Gartia

Proceedings Volume 11796, 117962A (2021) https://doi.org/10.1117/12.2594648

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Proceedings Article | 1 August 2021 Presentation + Paper

Switching between singular points and exceptional-point-enhanced sensing in non-Hermitian photonic structures

Georgios Veronis, Yin Huang, Lanyan Wang, Yuecheng Shen

Proceedings Volume 11796, 1179618 (2021) https://doi.org/10.1117/12.2594327

KEYWORDS: Switching, Waveguides, Crystals, Waveguide modes, Refractive index, Dielectrics, Photodetectors, Wave propagation, Switches, Optical components

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Proceedings Article | 22 March 2021 Presentation + Paper

Gamma irradiation effect studies on monolayer molybdenum disulfide on metallic substrates

Chintan Chavda, Georgios Veronis, Ashok Srivastava, Erin Vaughan

Proceedings Volume 11590, 115900I (2021) https://doi.org/10.1117/12.2583155

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SPIE Journal Paper | 22 July 2020

Towards classification of experimental Laguerre–Gaussian modes using convolutional neural networks

Safura Sharifi, Yaser Banadaki, Georgios Veronis, Jonathan Dowling

OE, Vol. 59, Issue 07, 076113, (July 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.7.076113

KEYWORDS: Data modeling, Performance modeling, Optical engineering, Neural networks, Systems modeling, Interference (communication), Spatial light modulators, Computer simulations, Diffraction

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Proceedings Article | 5 September 2019 Presentation + Paper

Nanostructures for enhancing the SERS signal of a graphene monolayer in water and visible light absorption in a graphene monolayer

G. Veronis, A. Mahigir, T.-W. Chang, A. Behnam, G. Liu, M. Gartia

Proceedings Volume 11081, 110810V (2019) https://doi.org/10.1117/12.2529621

KEYWORDS: Graphene, Absorption, Nanostructures, Dielectrics, Visible radiation, Surface enhanced Raman spectroscopy, Plasmonics, Reflectors, Raman spectroscopy, Mirrors

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Proceedings Article | 5 September 2019 Paper

Method for simultaneous optimization of the material composition and dimensions of multilayer photonic nanostructures

Corey Matyas, Chenglong You, Jonathan Dowling, Georgios Veronis

Proceedings Volume 11081, 110812V (2019) https://doi.org/10.1117/12.2529841

KEYWORDS: Genetic algorithms, Optimization (mathematics), Monte Carlo methods, Algorithm development, Absorption, Chromium, Photonic nanostructures, Structural design, Silicon, Germanium

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Proceedings Article | 19 September 2018 Presentation + Paper

Using phase-change materials to switch the direction of reflectionless light propagation in non-PT-symmetric structures

Georgios Veronis, Yin Huang, Yuecheng Shen, Changjun Min

Proceedings Volume 10721, 107210I (2018) https://doi.org/10.1117/12.2322004

KEYWORDS: Scattering, Switching, Switches, Optical components, Light scattering, Light wave propagation, Structural design

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We introduce a non-parity-time-symmetric three-layer structure, consisting of a gain medium layer sandwiched between two phase-change medium layers for switching of the direction of reflectionless light propagation. We show that for this structure unidirectional reflectionlessness in the forward direction can be switched to unidirectional reflectionlessness in the backward direction at the optical communication wavelength by switching the phase-change material Ge2Sb2Te5 (GST) from its amorphous to its crystalline phase. We also show that it is the existence of exceptional points for this structure with GST in both its amorphous and crystalline phases which leads to unidirectional reflectionless propagation in the forward direction for GST in its amorphous phase, and in the backward direction for GST in its crystalline phase. Our results could be potentially important for developing a new generation of compact active free-space optical devices. We also show that phase-change materials can be used to switch photonic nanostructures between cloaking and superscattering regimes at mid-infrared wavelengths. More specifically, we investigate the scattering properties of subwavelength three-layer cylindrical structures in which the material in the outer shell is the phase-change material GST. We first show that, when GST is switched between its amorphous and crystalline phases, properly designed electrically small structures can switch between resonant scattering and cloaking invisibility regimes. The contrast ratio between the scattering cross sections of the cloaking invisibility and resonant scattering regimes reaches almost unity. We then also show that larger, moderately small cylindrical structures can be designed to switch between superscattering and cloaking invisibility regimes, when GST is switched between its crystalline and amorphous phases. The contrast ratio between the scattering cross sections of cloaking invisibility and superscattering regimes can be as high as ~ 93%. Our results could be potentially important for developing a new generation of compact reconfigurable optical devices.

Proceedings Article | 28 August 2017 Presentation + Paper

Non-PT-symmetric plasmonic waveguide-cavity systems: unidirectional reflectionlessness and broadband near total light absorption

G. Veronis, Y. Huang, C. Min

Proceedings Volume 10345, 103451Z (2017) https://doi.org/10.1117/12.2274698

KEYWORDS: Plasmonics, Absorption, Waveguides, Light wave propagation

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Proceedings Article | 25 August 2017 Paper

Orientational imaging of a single plasmonic nanoparticle using dark-field hyperspectral imaging

Nishir Mehta, Amirreza Mahigir, Georgios Veronis, Manas Ranjan Gartia

Proceedings Volume 10346, 1034631 (2017) https://doi.org/10.1117/12.2274695

KEYWORDS: Plasmonics, Hyperspectral imaging, Nanostructures, Silver, Nanomedicine, Surface enhanced Raman spectroscopy, Microscopy, Computing systems, Finite-difference time-domain method, Nanolithography

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Proceedings Article | 17 February 2017 Presentation + Paper

Intensified surface enhanced Raman signal of a graphene monolayer on a plasmonic substrate through the use of fluidic dielectrics

A. Mahigir, M. R. Gartia, T.-W. Chang, G. L. Liu, G. Veronis

Proceedings Volume 10080, 1008005 (2017) https://doi.org/10.1117/12.2252614

KEYWORDS: Graphene, Surface enhanced Raman spectroscopy, Raman spectroscopy, Plasmonics, Signal detection, Dielectrics, Light-matter interactions, Raman scattering, Active plasmonics, Electromagnetic simulation, Nanostructures, Water, Silver, Nanoparticles

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Proceedings Article | 16 September 2016 Presentation + Paper

Unidirectional reflectionless propagation and slow-light enhanced sensing with plasmonic waveguide-cavity systems

G. Veronis, Y. Huang, A. Mahigir, P. Dastmalchi, W. Shin, C. Min, S. Fan

Proceedings Volume 9920, 99201Y (2016) https://doi.org/10.1117/12.2238232

KEYWORDS: Sensing systems, Plasmonics, Waveguides, Sensors, Plasmonic waveguides, Refractive index, Resonators, Wave propagation, Radio propagation, Transparency

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Proceedings Article | 16 September 2016 Presentation + Paper

Analytical method for the sensitivity analysis of active nanophotonic devices

Pouya Dastmalchi, Amirreza Mahigir, Georgios Veronis

Proceedings Volume 9920, 992024 (2016) https://doi.org/10.1117/12.2238246

KEYWORDS: Nanophotonics, Dielectrics, Control systems, Refractive index, Testing and analysis, Photonic devices, Plasmonics, Switches, Maxwell's equations, Metals

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Proceedings Article | 1 March 2016 Paper

Unidirectional reflectionless propagation in plasmonic waveguide-cavity devices

Y. Huang, G. Veronis, C. Min

Proceedings Volume 9750, 97500G (2016) https://doi.org/10.1117/12.2213784

KEYWORDS: Plasmonics, Waveguides, Wave propagation, Surface plasmons, Plasmonic waveguides, Quantum optics, Scattering, Quantum mechanics, Photonics systems, Resonators, Magnetism, Optical communications, Geometrical optics, Metals

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Proceedings Article | 31 August 2015 Paper

Wideband and wide angle thermal emitters for use as lightbulb filaments

Christopher Granier, Simón Lorenzo, Jonathan Dowling, Georgios Veronis

Proceedings Volume 9546, 954603 (2015) https://doi.org/10.1117/12.2190240

KEYWORDS: Tungsten, Silicon carbide, Visible radiation, Optimization (mathematics), 3D modeling, Solids, Black bodies, Light sources and illumination, Light emitting diodes, Transmittance

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Proceedings Article | 31 August 2015 Presentation + Paper

Magneto-optical switches in metal-dielectric-metal plasmonic waveguides

Ali Haddadpour, Vahid Foroughi Nezhad, Zongfu Yu, Georgios Veronis

Proceedings Volume 9546, 95461S (2015) https://doi.org/10.1117/12.2190316

KEYWORDS: Magnetism, Wave propagation, Metals, Waveguides, Dielectrics, Plasmonic waveguides, Modulation, Switches, Dispersion, Interfaces

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Proceedings Article | 27 February 2015 Paper

Nanoscale devices based on plasmonic coaxial waveguide resonators

Amirreza Mahigir, P. Dastmalchi, W. Shin, S. Fan, G. Veronis

Proceedings Volume 9365, 936511 (2015) https://doi.org/10.1117/12.2077893

KEYWORDS: Waveguides, Resonators, Plasmonics, Scattering, Metals, Silver, Waveguide modes, Magnetism, Optical components, Silicon

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Proceedings Article | 12 September 2014 Paper

Optimized aperiodic highly directional narrowband infrared emitters

Christopher Granier, Francis Afzal, Changjun Min, Jonathan Dowling, Georgios Veronis

Proceedings Volume 9162, 91621G (2014) https://doi.org/10.1117/12.2061241

KEYWORDS: Tungsten, Silica, Silicon, Photonic crystals, Genetic algorithms, Carbon monoxide, Structural design, Infrared radiation, Genetics, Sensors

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Proceedings Article | 8 March 2014 Paper

Slow-light enhanced nanoscale plasmonic waveguide sensors and switches

Y. Huang, P. Dastmalchi, G. Veronis

Proceedings Volume 8988, 89880V (2014) https://doi.org/10.1117/12.2041057

KEYWORDS: Sensors, Waveguides, Refractive index, Plasmonic waveguides, Plasmonics, Sensing systems, Resonators, Dielectrics, Mach-Zehnder interferometers, Transparency

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Proceedings Article | 25 September 2013 Paper

Multilayer structures with highly directional absorptivity for solar thermophotovoltaics

Christopher Granier, Francis Afzal, Georgios Veronis, Jonathan Dowling

Proceedings Volume 8824, 88240M (2013) https://doi.org/10.1117/12.2024773

KEYWORDS: Tungsten, Silicon, Silica, Photonic nanostructures, Solar energy, Polarization, Matrices, Absorption, Photonics systems, Refraction

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Proceedings Article | 6 March 2013 Paper

Efficient optimization of nanoplasmonic devices using space mapping

Pouya Dastmalchi, Georgios Veronis

Proceedings Volume 8627, 862712 (2013) https://doi.org/10.1117/12.2005276

KEYWORDS: Optimization (mathematics), Instrument modeling, Terahertz radiation, Resonators, Nanoplasmonics, Algorithm development, Plasmonic waveguides, Waveguides, Detection and tracking algorithms, Genetic algorithms

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Proceedings Article | 2 February 2012 Paper

Compact optical microcavity structures for enhancement of absorption and transmission cross sections of subwavelength plasmonic devices

Changjun Min, Yin Huang, Liu Yang, Georgios Veronis

Proceedings Volume 8264, 826413 (2012) https://doi.org/10.1117/12.909708

KEYWORDS: Optical microcavities, Absorption, Germanium, Resonance enhancement, Silica, Reflectivity, Waveguides, Plasmonics, Silver, Metals

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Proceedings Article | 12 September 2011 Paper

Active plasmonic devices enhanced by waveguide dispersion engineering

Changjun Min, Georgios Veronis

Proceedings Volume 8095, 80951C (2011) https://doi.org/10.1117/12.894270

KEYWORDS: Switches, Waveguides, Modulation, Absorption, Plasmonics, Plasmonic waveguides, Metals, Active plasmonics, Dispersion, Scattering

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Proceedings Article | 17 January 2011 Paper

Plasmon-induced transparency in subwavelength metal-dielectric-metal waveguides

Yin Huang, Changjun Min, Georgios Veronis

Proceedings Volume 7941, 79410X (2011) https://doi.org/10.1117/12.875956

KEYWORDS: Waveguides, Plasmonic waveguides, Scattering, Radio propagation, Light wave propagation, Resonators, Dispersion, Transparency, Plasmonics, Metals

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Proceedings Article | 11 September 2010 Paper

Investigation of the effect of fabrication-related disorders in subwavelength metal-dielectric-metal plasmonic waveguides

Changjun Min, Georgios Veronis

Proceedings Volume 7757, 77573E (2010) https://doi.org/10.1117/12.861084

KEYWORDS: Waveguides, Signal attenuation, Metals, Plasmonic waveguides, Reflection, Absorption, Monte Carlo methods, Wave propagation, Interfaces, Dielectrics

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Proceedings Article | 11 September 2010 Paper

All-optical nonlinear switches based on Y-shaped plasmonic waveguides

Changjun Min, Georgios Veronis

Proceedings Volume 7756, 775612 (2010) https://doi.org/10.1117/12.861086

KEYWORDS: Plasmonics, Switches, Nonlinear response, Waveguides, Refractive index, Plasmonic waveguides, Bistability, Dielectrics, Surface plasmons, Interfaces

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Proceedings Article | 18 February 2010 Paper

Enhancement of optics-to-THz conversion efficiency by metallic slot waveguides

Zhichao Ruan, Georgios Veronis, Konstantin Vodopyanov, Martin Fejer, Shanhui Fan

Proceedings Volume 7582, 75820W (2010) https://doi.org/10.1117/12.840088

KEYWORDS: Waveguides, Terahertz radiation, Gallium arsenide, Metals, Dielectrics, Quartz, Wave propagation, Dispersion, Frequency conversion, Phase matching

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Proceedings Article | 12 February 2010 Paper

Guided subwavelength optical mode with slow group velocity supported by a periodic plasmonic waveguide

Liu Yang, Changjun Min, Georgios Veronis

Proceedings Volume 7604, 760418 (2010) https://doi.org/10.1117/12.842899

KEYWORDS: Plasmonic waveguides, Waveguides, Geometrical optics, Resonators, Light wave propagation, Plasmonics, Dielectrics, Slow light, Surface plasmons, Dispersion

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Proceedings Article | 3 September 2009 Paper

All-optical absorption switches in subwavelength metal-dielectricmetal plasmonic waveguides

Changjun Min, Georgios Veronis

Proceedings Volume 7394, 73941Y (2009) https://doi.org/10.1117/12.826751

KEYWORDS: Switches, Modulation, Absorption, Plasmonic waveguides, Refractive index, Waveguides, Plasmonics, Optical pumping, Resonators, Wave propagation

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Proceedings Article | 16 February 2009 Paper

Ultra-small coherent thermal conductance using multi-layer photonic crystal

W. T. Lau, J.-T. Shen, G. Veronis, S. Fan

Proceedings Volume 7223, 722317 (2009) https://doi.org/10.1117/12.808432

KEYWORDS: Photons, Photonic crystals, Dielectrics, Crystals, Silicon, Refractive index, Dielectric polarization, Photonic crystal devices, Solids, Photon transport

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Proceedings Article | 10 February 2009 Paper

Large enhancement of second-harmonic generation in subwavelength metal-dielectric-metal plasmonic waveguides

Georgios Veronis, Shanhui Fan

Proceedings Volume 7218, 72180Y (2009) https://doi.org/10.1117/12.809727

KEYWORDS: Waveguides, Dielectrics, Second-harmonic generation, Plasmonic waveguides, Lithium niobate, Fabry–Perot interferometers, Interfaces, Silver, Metals, Silicon

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Proceedings Article | 26 August 2008 Paper

Properties of three-dimensional plasmonic slot waveguides

Georgios Veronis, Shanhui Fan

Proceedings Volume 7032, 703216 (2008) https://doi.org/10.1117/12.794322

KEYWORDS: Waveguides, Plasmonics, Metals, Dielectrics, Wave propagation, Silica, Silver, Thin films, Surface plasmons, Solids

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Proceedings Article | 12 February 2008 Paper

Gain-induced switching in metal-dielectric-metal plasmonic waveguides

Zongfu Yu, Georgios Veronis, Mark Brongersma, Shanhui Fan

Proceedings Volume 6896, 68960L (2008) https://doi.org/10.1117/12.764052

KEYWORDS: Plasmonic waveguides, Metals, Near field optics, Plasmonics, Semiconductor materials, Waveguides, Switching, Switches, Magnetism, Semiconductors

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Proceedings Article | 11 February 2008 Paper

Spatial coherence of the thermal electromagnetic field in the vicinity of a dielectric slab

Wah Tung Lau, Jung-Tsung Shen, Georgios Veronis, Shanhui Fan

Proceedings Volume 6901, 690109 (2008) https://doi.org/10.1117/12.761909

KEYWORDS: Near field, Dielectrics, Waveguide modes, Spatial coherence, Interfaces, Quantum optics, Black bodies, Dielectric polarization, Dispersion, Waveguides

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Proceedings Article | 9 February 2007 Paper

Design of mid-infrared photodetectors enhanced by surface plasmons on grating structures

Zongfu Yu, Georgios Veronis, Mark Brongersma, Shanhui Fan

Proceedings Volume 6475, 64750Q (2007) https://doi.org/10.1117/12.698016

KEYWORDS: Absorption, Surface plasmons, Photodetectors, Metals, Mid-IR, Sensors, Optical instrument design, Fabry–Perot interferometers, Gold, Semiconductor materials

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Proceedings Article | 9 February 2007 Paper

Compact couplers between dielectric and plasmonic slot waveguides

Georgios Veronis, Shanhui Fan

Proceedings Volume 6475, 64750S (2007) https://doi.org/10.1117/12.701562

KEYWORDS: Waveguides, Dielectrics, Plasmonic waveguides, Metals, Silicon, Plasmonics, Fabry–Perot interferometers, Silver, Wave propagation, Optical communications

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Proceedings Article | 1 March 2006 Paper

Plasmonic films with a periodic arrangement of subwavelength slits

Peter Catrysse, Georgios Veronis, Jung-Tsung Shen, Hocheol Shin, Shanhui Fan

Proceedings Volume 6128, 612818 (2006) https://doi.org/10.1117/12.648510

KEYWORDS: Metals, Dielectrics, Refractive index, Plasmonics, Dielectric polarization, Dispersion, Radio propagation, Waveguide modes, Metamaterials, Optical properties

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Proceedings Article | 27 February 2006 Paper

Subwavelength plasmonic waveguide structures based on slots in thin metal films

Georgios Veronis, Shanhui Fan

Proceedings Volume 6123, 612308 (2006) https://doi.org/10.1117/12.646789

KEYWORDS: Waveguides, Plasmonics, Plasmonic waveguides, Metals, Wave propagation, Near field optics, Dispersion, Dielectrics, Silver, Thin films

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Proceedings Article | 17 January 2006 Paper

Frequency domain modeling of nanophotonic devices

Georgios Veronis, Shanhui Fan

Proceedings Volume 6038, 60380X (2006) https://doi.org/10.1117/12.651341

KEYWORDS: Plasmonics, Dielectrics, Nanophotonics, Metals, Dispersion, Near field optics, Interfaces, Waveguides, Silica, Instrument modeling

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Proceedings Article | 13 April 2005 Paper

Coupled optical and electronic simulations of electrically pumped photonic-crystal-based LEDs

Georgios Veronis, Yang Liu, Wonjoo Suh, Minghui Han, Zheng Wang, Robert Dutton, Shanhui Fan

Proceedings Volume 5733, (2005) https://doi.org/10.1117/12.590899

KEYWORDS: Quantum wells, Photonic crystals, Electrodes, Electrons, Light emitting diodes, Aluminum, Doping, Optical simulations, Gallium, Oxides

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Proceedings Article | 13 April 2005 Paper

A new method for sensitivity analysis of photonic crystal devices

Georgios Veronis, Robert Dutton, Shanhui Fan

Proceedings Volume 5733, (2005) https://doi.org/10.1117/12.590626

KEYWORDS: Dielectrics, Photonic crystal devices, Interfaces, Nanophotonics, Photonic crystals, Magnetism, Algorithms, Bandpass filters, Optical filters, Fluctuations and noise

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