Conference2025 IEEE Conference on Computational Imaging Using Synthetic Apertures Cisa 2025 · January 1, 2025
We explore synthetic aperture radar (SAR) 3D imaging capabilities in the sub-THz band using a novel 110-260 GHz experimental testbed. We propose RADar Implicit SHapes (RADISH), a post-processing method that leverages the SAR's millimeter-level imaging reso ...
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Conference2025 IEEE Research and Applications of Photonics in Defense Conference Rapid 2025 Proceedings · January 1, 2025
Metasurfaces have emerged as a powerful platform for controlling light at subwavelength scales, enabling tailored reflection, transmission, and absorption properties. Among these, quasi-bound states in the continuum (qBIC) provide a mechanism for enhancing ...
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ConferenceCLEO Science and Innovations Proceedings CLEO 2025 · January 1, 2025
Quantum cascade laser pumped molecular lasers have recently been demonstrated as versatile sources of terahertz radiation. Here we introduce carbonyl sulfide as a laser gain medium exhibiting promising performance for high frequency, high bandwidth communi ...
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ConferenceCLEO Science and Innovations CLEO S and I 2024 in Proceedings CLEO 2024 Part of Conference on Lasers and Electro Optics · January 1, 2024
We present an improved numerical model for quantum cascade laser pumped molecular lasers (QPMLs) and present predictions of QPML performance for various molecular gases such as OCS, NH3, N2O, CH3F, HCN or H2O. ...
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Conference2024 Conference on Lasers and Electro-Optics, CLEO 2024 · January 1, 2024
We present an improved numerical model for quantum cascade laser pumped molecular lasers (QPMLs) and present predictions of QPML performance for various molecular gases such as OCS, NH3, N2O, CH3F, HCN or H2O. ...
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Conference2024 Conference on Lasers and Electro Optics CLEO 2024 · January 1, 2024
We present an improved numerical model for quantum cascade laser pumped molecular lasers (QPMLs) and present predictions of QPML performance for various molecular gases such as OCS, NH3, N2O, CH3F, HCN or H2O. ...
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Conference2023 Conference on Lasers and Electro Optics CLEO 2023 · January 1, 2023
Non-Hermitian optics provides a unique platform to take advantage of absorption losses in materials and control radiative properties. We demonstrate a non-Hermitian metasurface that exhibit directional suppression of thermal radiation while maintaining tra ...
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ConferenceCLEO Fundamental Science CLEO Fs 2023 · January 1, 2023
Non-Hermitian optics provides a unique platform to take advantage of absorption losses in materials and control radiative properties. We demonstrate a non-Hermitian metasurface that exhibit directional suppression of thermal radiation while maintaining tra ...
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ConferenceOptics Infobase Conference Papers · January 1, 2022
The synergy between topology and non-Hermiticity in photonics holds potential for optical devices that are robust against defects. We demonstrate a non-Hermitian plasmonic-dielectric metasurface in the visible with non-trivial topology. ...
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Conference2022 Conference on Lasers and Electro Optics CLEO 2022 Proceedings · January 1, 2022
The synergy between topology and non-Hermiticity in photonics holds potential for optical devices that are robust against defects. We demonstrate a non-Hermitian plasmonic-dielectric metasurface in the visible with non-trivial topology. ...
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ConferenceOptics Infobase Conference Papers · January 1, 2022
The quantum cascade laser pump molecular laser (QPML) is a tunable source of terahertz frequencies operating at room temperature that can easily scale beyond the milliwatt level. We present here new progress in QPML research. ...
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ConferenceOptics Infobase Conference Papers · January 1, 2022
Infrared/Terahertz double resonance spectroscopy is explored for remote identification of trace molecular gases at atmospheric pressures. Free induction decay of low pressure hyperfine-resolved transitions in CH335Cl inform a roadmap ...
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Conference2021 Conference on Lasers and Electro Optics CLEO 2021 Proceedings · May 1, 2021
We demonstrate a quantum cascade laser-pumped terahertz laser using methyl fluoride gas. The large dipole moment of this molecule allows for a low threshold laser with frequency tunable emission spanning more than one terahertz. ...
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ConferenceOptics Infobase Conference Papers · January 1, 2021
We demonstrate a quantum cascade laser-pumped terahertz laser using methyl fluoride gas. The large dipole moment of this molecule allows for a low threshold laser with frequency tunable emission spanning more than one terahertz. ...
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ConferenceOptics Infobase Conference Papers · January 1, 2021
Terahertz metamaterials that exhibit broad spectral resonances are used to probe local strain fields. By choosing specific frequencies and polarizations for measurement, it is possible to obtain unique spatial maps for different strain states. ...
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ConferenceOptics Infobase Conference Papers · January 1, 2021
In preparation for remote atmospheric detection, preliminary double resonance spectroscopic measurements were made of CH3Cl and CH3F using a LWIR pump to excite transient vibrational states and a THz source to probe the rotational lev ...
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ConferenceOptics Infobase Conference Papers · January 1, 2021
We demonstrate and characterize a new quantum cascade laser-pumped molecular laser using methyl fluoride as its gain medium. We show that a laser using this gain medium can exhibit a low pump threshold while allowing emission over more than 100 lines spann ...
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ConferenceInternational Conference on Infrared Millimeter and Terahertz Waves Irmmw Thz · November 8, 2020
Terahertz metamaterials with strain-sensitive junctions are introduced to identify structurally compromised regions of composite materials. Spatially mapping the local polarimetric metamaterial response visualizes and records regions of stress extrema expe ...
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ConferenceOptics Infobase Conference Papers · September 14, 2020
Charge separation in ZnO/ZnS type II heterostructures may prove useful as a photocatalyst support. This work used cathodoluminescence spectroscopy to explore whether thermal annealing of ZnO and ZnS powders can synthesize such heterostructures. ...
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ConferenceConference Proceedings Lasers and Electro Optics Society Annual Meeting LEOS · May 1, 2020
We demonstrate a new type of Terahertz Gas Laser pumped by a tunable solid-state laser. This laser has a wide tuning range and operates at room temperature with a high efficiency in a very compact design. ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · January 1, 2020
An overview on our latest research on UV plasmonics with Rh and Ga metal nanostructures is presented. We will pay attention to their plasmonic performance and UV tunability. For Ga, its polymorphism will be analyzed and for Rh three characteristic geometri ...
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ConferenceOptics Infobase Conference Papers · January 1, 2020
We demonstrate a new type of Terahertz Gas Laser pumped by a tunable solid-state laser. This laser has a wide tuning range and operates at room temperature with a high efficiency in a very compact design. ...
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ConferenceOptics Infobase Conference Papers · January 1, 2020
Terahertz metamaterials with strain-sensitive junctions are introduced to identify structurally compromised regions of composite materials. Spatially mapping the local polarimetric metamaterial response visualizes and records regions of stress extrema expe ...
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ConferenceOptics Infobase Conference Papers · January 1, 2020
Double resonant spectroscopy measurements are presented using a tunable 9-11 μm pump source with a sub-nanosecond pulse train output. This method is demonstrated at atmospheric pressure for methyl halides using a THz probe. ...
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ConferenceOptics Infobase Conference Papers · January 1, 2020
We demonstrate a new class of optically pumped far-infrared lasers using quantum cascade lasers as the pump. Following an initial demonstration using nitrous oxide, we show how we can generate light at THz frequencies using different gases. ...
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ConferenceOptics Infobase Conference Papers · January 1, 2020
This work presents the design and performance of a 10 μm sub-picosecond laser source. Initial measurements of high-intensity atmospheric propagation are also presented, which represent the first kilometer-range studies of ultrashort pulses in this waveleng ...
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ConferenceInternational Conference on Metamaterials Photonic Crystals and Plasmonics · January 1, 2019
Epoxy materials are widely used for efficient bonding and repair of composite materials. Plasmonic nanoparticles can be employed as heat source to improve curing of epoxy films. We theoretically show how the nanoparticle-assisted photothermal curing is a f ...
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ConferenceOptics Infobase Conference Papers · January 1, 2018
We present experimental studies of the linear and nonlinear optical response of switchable terahertz metasurfaces, using terahertz ellipsometry and nonlinear transmission spectroscopy with intense THz pulses. ...
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Conference2017 Conference on Lasers and Electro Optics CLEO 2017 Proceedings · October 25, 2017
We perform experimental characterization of switchable THz metasurfaces using variable-angle broadband THz ellipsometry. We extract frequency dependent surface susceptibility tensors and model the applied DC bias as tuning the conductivity of the active la ...
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ConferenceInternational Conference on Infrared Millimeter and Terahertz Waves Irmmw Thz · October 12, 2017
We describe experimental measurements and simulations of a switchable THz metasurface device in a slab waveguide geometry. The device exhibits giant phase modulation of the TE1 mode at particular frequencies determined by the metamaterial geomet ...
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ConferenceJournal of Physics Conference Series · August 15, 2017
Remotely sensed microwave reflection was measured concurrently with standard magnetotransport in photo-excited high mobility GaAs/AlGaAs heterostructure. Experiments indicate strong reflection resonance on both sides of the magnetic field axis for linearly ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · January 1, 2017
Plasmonics in the UV-range constitutes a new focus of research due to new challenges arising in fields such as biology, chemistry or spectroscopy. Very recent studies point out gallium and rhodium as good candidates for these purposes because of their low ...
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ConferenceOptics Infobase Conference Papers · January 1, 2017
We perform experimental characterization of switchable THz metasurfaces using variable-angle broadband THz ellipsometry. We extract frequency dependent surface susceptibility tensors and model the applied DC bias as tuning the conductivity of the active la ...
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Conference2016 Conference on Lasers and Electro Optics CLEO 2016 · December 16, 2016
Electron-phonon coupling in graphene is studied across the Brillouin zone. The contributions from modulated hopping and conventional deformation potential coupling, and from intraband and interband coupling are analyzed and related to available experimenta ...
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ConferenceInternational Conference on Infrared Millimeter and Terahertz Waves Irmmw Thz · November 28, 2016
We describe experimental characterization of switchable THz metasurfaces using variable-angle broadband THz ellipsometry. A theoretical framework is used to extract surface susceptibility tensors as a function of frequency and applied DC bias. This will al ...
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ConferenceOptics Infobase Conference Papers · July 18, 2016
An Off-axis Fresnel interferometric imager was constructed to acquire holograms using a highly coherent, narrowband, continuous wave source tunable over 0.3-1.0 THz. Fresnel and angular spectrum reconstruction methods of amplitude and phase holograms are p ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · January 1, 2016
Plasmonics in the UV-range constitutes a new challenge due to the increasing demand to detect, identify and destroy biological toxins, enhance biological imaging, and characterize semiconductor devices at the nanometer scale. Silver and aluminum have an ef ...
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ConferenceOptics Infobase Conference Papers · January 1, 2016
Electron-phonon coupling in graphene is studied across the Brillouin zone. The contributions from modulated hopping and conventional deformation potential coupling, and from intraband and interband coupling are analyzed and related to available experimenta ...
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ConferenceInternational Conference on Infrared Millimeter and Terahertz Waves Irmmw Thz · November 13, 2014
Terahertz digital off-axis holography has been demonstrated as a non-destructive imaging tool for three-dimensional (3D) printed structures. Digital holographic reconstructions from two structures were used to measure the imager's modulation transfer funct ...
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ConferenceInternational Conference on Infrared Millimeter and Terahertz Waves Irmmw Thz · November 13, 2014
Spatially different arrangements of identical metaatoms in a unit cell bring about distinct properties in stereometamaterials. Integrating the stereometamaterial into a perfect metamaterial absorber, we designed, fabricated, and characterized a device with ...
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ConferenceOptics Infobase Conference Papers · October 14, 2014
We studied the electron-phonon and electron-electron interactions in graphene and its heterostructures using pump-probe spectroscopy. Graphene on hexa-Boron Nitride undergoes band structure modification, which affects the relaxation mechanisms of the hot c ...
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ConferenceOptics Infobase Conference Papers · October 14, 2014
High frequency differential transmission spectroscopy of graphene, probing near the Mpoint, is performed and analyzed theoretically. Electron-phonon coupling is identified as the chief mechanism for renormalization with an effective acoustic deformation po ...
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ConferenceProceedings 2014 Summer Topicals Meeting Series Sum 2014 · September 18, 2014
Zinc oxide (ZnO) is a major wide band gap semiconductor material for optoelectronic and photonic devices because of its exceptional optical properties, arising from the combination of a wide band gap (~3.37 eV) and a large exciton binding energy ...
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ConferenceFiber Society 2014 Fall Meeting and Technical Conference: Fibers for ÃÂïÃÂÿÃÂý the Future · January 1, 2014
Depth profiling of poly(ethylene terephthalate) (PET) fibers modified with trimethylaluminum (TMA) using transmission electron microscopy (TEM), atomic force microscopy (AFM), and atomic force microscope-based infrared spectroscopy (AFM-IR). ...
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ConferenceFiber Society 2014 Fall Meeting and Technical Conference Fibers for the Future · January 1, 2014
Depth profiling of poly(ethylene terephthalate) (PET) fibers modified with trimethylaluminum (TMA) using transmission electron microscopy (TEM), atomic force microscopy (AFM), and atomic force microscope-based infrared spectroscopy (AFM-IR). ...
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ConferenceConference on Lasers and Electro Optics Europe Technical Digest · January 1, 2014
High frequency differential transmission spectroscopy of graphene, probing near the Mpoint, is performed and analyzed theoretically. Electron-phonon coupling is identified as the chief mechanism for renormalization with an effective acoustic deformation po ...
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ConferenceLaser Science, LS 2014 · January 1, 2014
High frequency differential transmission spectroscopy of graphene, probing near the Mpoint, is performed and analyzed theoretically. Electron-phonon coupling is identified as the chief mechanism for renormalization with an effective acoustic deformation po ...
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ConferenceLaser Science, LS 2014 · January 1, 2014
We studied the electron-phonon and electron-electron interactions in graphene and its heterostructures using pump-probe spectroscopy. Graphene on hexa-Boron Nitride undergoes band structure modification, which affects the relaxation mechanisms of the hot c ...
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ConferenceOptics InfoBase Conference Papers · January 1, 2014
High frequency differential transmission spectroscopy of graphene, probing near the Mpoint, is performed and analyzed theoretically. Electron-phonon coupling is identified as the chief mechanism for renormalization with an effective acoustic deformation po ...
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ConferenceOptics Infobase Conference Papers · January 1, 2014
High frequency differential transmission spectroscopy of graphene, probing near the Mpoint, is performed and analyzed theoretically. Electron-phonon coupling is identified as the chief mechanism for renormalization with an effective acoustic deformation po ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · December 1, 2012
In recent years a great amount of research has been focused on metamaterials, initially for fabrication of left-handed materials for use in devices such as superlenses or electromagnetic cloaking. Such devices have been developed and demonstrated in regime ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · December 1, 2012
Imaging with electromagnetic radiation in the THz frequency regime, between 0.2 THz and 10 THz, has made considerable progress in recent years due to the unique properties of THz radiation, such as being non-ionizing and transparent through many materials. ...
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ConferenceOptics InfoBase Conference Papers · December 1, 2012
This talk will survey the application of digital holographic and tomographic techniques to highly coherent, single frequency terahertz sources and extremely sensitive heterodyne receivers for high resolution three dimensional reconstructions of extended, v ...
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ConferenceFrontiers in Optics Fio 2012 · December 1, 2012
We report on a Terahertz imaging methodology that combines digital holography and polarimetry to characterize objects in transmission and reflection geometries on their geometrical and physical properties in the Terahertz region between 0.3 - 1.0 THz. Digi ...
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ConferenceOptics Infobase Conference Papers · January 1, 2012
This talk will survey the application of digital holographic and tomographic techniques to highly coherent, single frequency terahertz sources and extremely sensitive heterodyne receivers for high resolution three dimensional reconstructions of extended, v ...
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ConferenceIrmmw Thz 2011 36th International Conference on Infrared Millimeter and Terahertz Waves · December 1, 2011
IR/THz double resonance spectroscopy has recently been proposed as a method of chemical remote sensing with isotopic molecular recognition specificity at atmospheric pressures for distances approaching one kilometer. Double resonance signatures are calcula ...
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ConferenceIrmmw Thz 2011 36th International Conference on Infrared Millimeter and Terahertz Waves · December 1, 2011
Terahertz digital off-axis holography is demonstrated with a highly coherent, frequency tunable continuous wave terahertz source emitting between 0.1 and 0.8 THz and a single spatially-scanned Schottky diode detector. The angular spectrum and dual waveleng ...
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ConferenceIrmmw Thz 2011 36th International Conference on Infrared Millimeter and Terahertz Waves · December 1, 2011
We report high throughput, continuous wave terahertz imaging using a near-field funnel aperture with adjustable output diameter. The frequency dependence of the output power and resolution immediately following the aperture are reported, as are the propaga ...
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ConferenceIrmmw Thz 2011 36th International Conference on Infrared Millimeter and Terahertz Waves · December 1, 2011
A reconfigurable, all-reflective terahertz imager has been constructed, capable of 4096-pixel resolution in 20 seconds. The imager spans 0.09-0.90 THz in 5 bands, each represented by a 16-element detector array. Both, beam profiling and confocal imaging co ...
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ConferenceApplied Mechanics and Materials · December 1, 2010
Total hip replacement is a highly successful operation; restoring function and reducing pain in arthritis patients. In recent years, thinner resurfacing acetabular cups have been introduced in order to preserve bone stock and reduce the risk of dislocation ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · June 22, 2010
The standalone, portable Terahertz (THz) Imaging Profiler Array (TIPA) based on an Offner Relay design has been constructed as a THz beam profiler and multispectral imager. It integrates a solid-state detector technology (Schottky Diodes) that can be confi ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · June 22, 2010
Single resonance chemical remote sensing, such as Fourier-transform infrared spectroscopy, has limited recognition specificity because of atmospheric pressure broadening. Active interrogation techniques promise much greater chemical recognition that can ov ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · September 8, 2009
Laser induced Semiconductor Switches (LSS), comprised of a gap antenna deposited on a semiconductor substrate and photoexcited by a pulsed laser, are the primary source of THz radiation utilized in time-domain spectroscopy (TDS). THz-TDS applications such ...
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ConferenceMaterials Science and Engineering B · May 15, 2008
Beta phase gallium oxide thin films deposited by pulsed laser deposition are efficient hosts for rare earth metals such as europium. In this study europium doped gallium oxide deposited on glass substrates is used to make red (611 nm) electroluminescent de ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · April 21, 2008
The effect of plasma-induced ion damage on the optical properties of ZnO films grown by plasma-assisted molecular beam epitaxy on a-sapphire substrates and GaN(0001)/c-sapphire templates prepared has been studied using steady-state and time-resolved photol ...
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ConferenceOptics InfoBase Conference Papers · January 1, 2008
We demonstrate novel use of in situ spectroscopic ellipsometry to probe in real-time metal nanoparticle deposition. Real-time monitoring of NP assembly plasmon resonance enables control of NP size via the plasmon resonance and vice versa. ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · May 24, 2007
We report on growth and characterization of epitaxial lateral overgrown (ELO) (112̄0) a-plane GaN by metalorganic chemical vapor deposition (MOCVD). The ELO samples were grown using a SiO2 striped mask pattern consisting of 4 μm wide open windows ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · May 24, 2007
ZnO nanorods were grown by catalyst-assisted vapor phase transport on Si(001), GaN(0001)/c-Al2O3, and bulk ZnO(0001) substrates. Morphology studies as well as X-ray diffraction and transmission electron microscopy showed that ZnO nano ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · May 24, 2007
GaN epitaxial layers grown on SiC and sapphire suffer from high density of line and point defects. To address this problem, new growth methods using in situ or ex situ nano-network masks as dislocation filters have been introduced recently. In this work, w ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · May 24, 2006
We report on the structural, electrical, and optical characterization of GaN epitaxial layers grown by metalorganic chemical vapor deposition (MOCVD) on SiN x and TiN x, porous templates in order to reduce the density of extended defe ...
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ConferenceJournal of Electronic Materials · April 1, 2006
Thermal conductivities (K) of melt-grown bulk ZnO samples thermally treated under different conditions were measured using scanning thermal microscopy. Samples annealed in air at 1050°C for 3 h and treated with N-plasma at 750°C for 1 min. exhibited κ = 1. ...
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ConferenceMaterials Science Forum · January 1, 2006
Improved structural quality and radiative efficiency were observed in GaN thin films grown by metalorganic chemical vapor deposition on in situ-formed SiN and TiN porous network templates. The room temperature carrier decay time of 1.86 ns measured for a T ...
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ConferenceMaterials Research Society Symposium Proceedings · January 1, 2006
ZnO nanorods were grown by catalyst-assisted vapor phase transport on Si(001), GaN(0001)/c-Al2O3, and bulk ZnO(0001) substrates. Morphology studies showed that ZnO nanorods grew mostly perpendicular to the GaN substrate surface, where ...
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ConferenceMaterials Research Society Symposium Proceedings · August 25, 2005
Recently, wide band gap II-IV-N 2 semiconductors such as ZnSiN 2, and ZnGeN 2 and ZnSiGeN 2 have been synthesized, but very little is known about their band structure, optical properties, or electronic properties ...
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ConferenceMaterials Research Society Symposium Proceedings · January 1, 2005
The GaN:RE phosphor development plays a major role in the GaN:RE AC thick dielectric electroluminescent (TDEL) device optimization. In this paper we report on EL devices fabricated using Eu-doped GaN red phosphors films grown by interrupted growth epitaxy ...
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ConferenceOptics Infobase Conference Papers · January 1, 2005
Broadband, visible-wavelength emission of unprecedented brightness from ZnO nanowires is characterized by steady-state and ultrafast time-resolved spectroscopy. Energy transfer is explored by simultaneously studying the unusually fast decay of band edge em ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · August 16, 2004
In this study, stimulated emission (SE) and ultrafast carrier relaxation are explored in InGaN and AlGaN/GaN multiple quantum wells (MQWs). The SE threshold densities (I th) in InGaN MQWs increase with increasing QW depth. By contrast, no signif ...
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ConferenceConference on Quantum Electronics and Laser Science QELS Technical Digest Series · December 1, 2003
Strain-induced modification of recombination dynamics in single layer (SQDs) and stacked (MQDs) GaN quantum dots is compared by time-resolved photoluminescence spectroscopy. Large strain induced built-in fields increases the radiative recombination time in ...
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ConferenceOSA Trends in Optics and Photonics Series · January 1, 2003
A spectroscopic study of Eu-doped GaN grown on silicon by solid state molecular beam epitaxy is presented. The temperature dependence of the continuous-wave and time-resolved luminescence properties reveals details about the energy transfer rates and therm ...
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ConferenceOptics Infobase Conference Papers · January 1, 2003
Strain-induced modification of recombination dynamics in single layer (SQDs) and stacked (MQDs) GaN quantum dots is compared by time-resolved photoluminescence spectroscopy. Large strain induced built-in fields increases the radiative recombination time in ...
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ConferenceOptics Infobase Conference Papers · January 1, 2003
A spectroscopic study of Eu-doped GaN grown on silicon by solid state molecular beam epitaxy is presented. The temperature dependence of the continuous-wave and time-resolved luminescence properties reveals details about the energy transfer rates and therm ...
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ConferenceConference on Quantum Electronics and Laser Science QELS Technical Digest Series · January 1, 2002
Coherent bulk and zone folded longitudinal acoustic phonons were generated in InGaN MQWs using impulsive optical techniques. It was observed that the frequency of the oscillations was changed by the changing quantum well period. The bulk phonon transport i ...
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ConferenceConference on Quantum Electronics and Laser Science QELS Technical Digest Series · January 1, 2002
Spontaneous emission rate in nitrides was enhanced. The degree of enhancement increased with increasing film thickness and decreasing GaN cap layer thickness. Enhancement factors of almost 100 were indicated by dramatically accelerated TRPL decay at a freq ...
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ConferencePhysica Status Solidi B Basic Research · January 1, 2001
Sub-picosecond optical pump-probe techniques were used to generate coherent zone-folded longitudinal acoustic phonons (ZFLAPs) in an InGaN multiple quantum well structure. Differential transmission measurements revealed that carriers injected near the barr ...
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ConferenceConference Digest International Conference on Infrared and Millimeter Waves · December 1, 1987
A small-diameter continuous-wave far-infrared (FIR) laser that can provide approximately 100-MHz spectrally pure tunability has been developed and studied both experimentally and theoretically. Operation of this laser at pressures significantly greater tha ...
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ConferenceConference Digest International Conference on Infrared and Millimeter Waves · December 1, 1987
Optically pumped far-infrared (OPFIR) lasers have been the subject of extensive theoretical and experimental investigations. The authors have used the results of a large experimental data set to appropriately select the degrees of freedom for a numerical s ...
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ConferenceConference Digest International Conference on Infrared and Millimeter Waves · December 1, 1987
The authors conducted a time-resolved double-resonance study of **1**3CH//3F to explore the rotational and vibrational energy-transfer processes in this optically pumped far-infrared (OPFIR) laser. The use of a Q-switched CO//2 laser and sensitive, tunable ...
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Conferenceundefined · January 1, 1987
A program of diagnostic studies and theoretical modeling has resulted in development of a tunable optically pumped far-infrared (FIR) laser that is very compact. The tunability of this laser comes about because it operates at pressures significantly higher ...
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