Prof. Hui Chun Liu Profile

Prof. Hui Chun Liu

"1000" Chair Professor at Shanghai Jiao Tong Univ

SPIE Involvement:

Author

Publications (62)

Proceedings Article | 24 January 2011 Paper

Phonon and polaron enhanced IR-THz photodetectors

H. C. Liu, C. Y. Song, Z. Wasilewski, M. Buchanan

Proceedings Volume 7945, 79450X (2011) https://doi.org/10.1117/12.874098

KEYWORDS: Phonons, Absorption, Quantum wells, Gallium arsenide, Polarons, Photodetectors, Infrared radiation, Electrons, Quantum well infrared photodetectors, Semiconductors

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Proceedings Article | 24 January 2011 Paper

Intersubband impact ionization in THz QWIPs: shaping band structure reorganizations to design novel detectors

A. Delga, F. R. Jasnot, A. Buffaz, H. Guo, L. Doyennette, L. A. de Vaulchier, Z. Wasilewski, H. C. Liu, V. Berger

Proceedings Volume 7945, 79450W (2011) https://doi.org/10.1117/12.870923

KEYWORDS: Electrons, Terahertz radiation, Quantum well infrared photodetectors, Ionization, Sensors, Quantum wells, Magnetism, Phonons, Temperature metrology, Structural design

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Proceedings Article | 24 January 2011 Paper

Room temperature photovoltaic response of split-off band infrared detectors with a graded barrier

A. G. U. Perera, S. Matsik, D. P. Pitigala, Y. F. Lao, S. P. Khanna, L. H. Li, E. Linfield, Z. Wasilewski, M. Buchanan, X. H. Wu, H. C. Liu

Proceedings Volume 7945, 79451I (2011) https://doi.org/10.1117/12.870047

KEYWORDS: Sensors, Photovoltaics, Solar energy, Superlattices, Gallium arsenide, Infrared detectors, Aluminum, Infrared sensors, Absorption, Scattering

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Proceedings Article | 4 May 2010 Paper

Hybrid infrared optical upconversion devices with a built-in electrical gain

Jun Chen, Dayan Ban, Michael Helander, Zhenghong Lu, P. Poole, H. C. Liu

Proceedings Volume 7660, 76600P (2010) https://doi.org/10.1117/12.850279

KEYWORDS: Organic light emitting diodes, Upconversion, Metals, Infrared radiation, Near infrared, Photodetectors, Visible radiation, Hybrid optics, Mirrors, Heterojunctions

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Proceedings Article | 26 February 2010 Paper

Free space optical communication utilizing mid-infrared interband cascade laser

A. Soibel, M. Wright, W. Farr, S. Keo, C. Hill, R. Yang, H. Liu

Proceedings Volume 7587, 75870S (2010) https://doi.org/10.1117/12.845788

KEYWORDS: Free space optics, Fiber optic gyroscopes, Mid-IR, Signal attenuation, Sensors, Atmospheric optics, Quantum cascade lasers, Scintillation, Free space optical communications, Laser development

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Proceedings Article | 28 August 2009 Paper

Al fraction induced effects on the capacitance characteristics of n+-GaN/AlxGa1-xN IR detectors

Laura Byrum, Gamini Ariyawansa, Ranga Jayasinghe, Nikolaus Dietz, A. G. Unil Perera, Steven Matsik, Ian Ferguson, Andrew Bezinger, Hui Chun Liu

Proceedings Volume 7467, 74670W (2009) https://doi.org/10.1117/12.828156

KEYWORDS: Capacitance, Aluminum, Sensors, Infrared detectors, Gallium nitride, Heterojunctions, Absorption, Ultraviolet radiation, Infrared sensors, Interfaces

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Proceedings Article | 28 August 2009 Paper

Terahertz quantum well devices and their potential for free space communication

P. Grant, S. Laframboise, R. Dudek, M. Graf, A. Bezinger, H. C. Liu

Proceedings Volume 7467, 74670P (2009) https://doi.org/10.1117/12.824541

KEYWORDS: Terahertz radiation, Quantum cascade lasers, Photodetectors, Quantum wells, Free space, Modulation, Mirrors, Optical amplifiers, Sensors, Telecommunications

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Proceedings Article | 7 May 2009 Paper

Novel quantum well, quantum dot, and superlattice heterostructure based infrared detectors

David Z.-Y. Ting, Sumith Bandara, Cory Hill, Sarath Gunapala, Yia-Chung Chang, H. Liu, C. Song, Alexander Soibel, Jason Mumolo, Jean Nguyen, John Liu, Sam Keo, Sir Rafol, E. Blazejewski

Proceedings Volume 7298, 729805 (2009) https://doi.org/10.1117/12.818879

KEYWORDS: Superlattices, Quantum well infrared photodetectors, Infrared detectors, Quantum wells, Absorption, Infrared radiation, Quantum dots, Long wavelength infrared, Heterojunctions, Sensors

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Proceedings Article | 24 February 2009 Paper

Mid-infrared interband cascade lasers for free-space laser communication

A. Soibel, M. Wright, W. Farr, S. Keo, C. Hill, R. Yang, H. Liu

Proceedings Volume 7199, 71990E (2009) https://doi.org/10.1117/12.812141

KEYWORDS: Quantum cascade lasers, Modulation, Free space optical communications, Mid-IR, Laser development, Semiconductor lasers, Atmospheric optics, Quantum well infrared photodetectors, Light sources, Free space optics

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Proceedings Article | 26 January 2009 Paper

Designing phonons for active use in terahertz devices

H. C. Liu, C. Y. Song, Z. Wasilewski, J. Gupta, M. Buchanan

Proceedings Volume 7222, 72220X (2009) https://doi.org/10.1117/12.807532

KEYWORDS: Phonons, Absorption, Quantum wells, Gallium arsenide, Quantum well infrared photodetectors, Quantum optics, Sensors, Raman spectroscopy, Semiconductors, Structural design

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Proceedings Article | 11 March 2008 Paper

Photon upconversion devices for imaging

H. C. Liu, H. Luo, D. Ban, M. Buchanan, Z. Wasilewski, A. SpringThorpe, P. Poole

Proceedings Volume 6984, 698431 (2008) https://doi.org/10.1117/12.792384

KEYWORDS: Light emitting diodes, Upconversion, Doping, Internal quantum efficiency, Photodetectors, Imaging devices, Gallium arsenide, External quantum efficiency, Quantum efficiency, Photonic devices

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Proceedings Article | 14 January 2008 Paper

Quantum dots for terahertz devices

H. C. Liu, B. Aslan, J. Gupta, Z. Wasilewski, G. Aers, A. SpringThorpe, M. Buchanan

Proceedings Volume 6840, 684011 (2008) https://doi.org/10.1117/12.759892

KEYWORDS: Quantum wells, Terahertz radiation, Gallium arsenide, Quantum dots, Doping, Magnetism, Indium arsenide, Superlattices, Silicon, Stereolithography

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Proceedings Article | 26 September 2007 Paper

Dual band HEIWIP detectors with nitride materials

A. Unil Perera, Gamini Ariyawansa, Ranga Jayasinghe, Laura Byrum, Nikolaus Dietz, Steven Matsik, Ian Ferguson, Hui Luo, Andrew Bezinger, Hui Chun Liu

Proceedings Volume 6678, 66780S (2007) https://doi.org/10.1117/12.734731

KEYWORDS: Ultraviolet radiation, Sensors, Infrared radiation, Infrared sensors, Ultraviolet detectors, Absorption, Modulation, Gallium nitride, Aluminum, Etching

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Proceedings Article | 17 October 2006 Paper

Device and application of quantum well photodetectors for terahertz region

H. Luo, H. C. Liu, C. Song, Z. Wasilewski, A. SpringThorpe

Proceedings Volume 6386, 638611 (2006) https://doi.org/10.1117/12.690982

KEYWORDS: Terahertz radiation, Quantum well infrared photodetectors, Quantum wells, Absorption, Doping, Photodetectors, Gallium arsenide, Aluminum, Waveguides, Quantum cascade lasers

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Proceedings Article | 18 September 2006 Paper

Ultrahigh frequency quantum well infrared photodetectors

Peter Grant, H. Liu, M. Buchanan, R. Dudek

Proceedings Volume 6297, 629708 (2006) https://doi.org/10.1117/12.680891

KEYWORDS: Quantum well infrared photodetectors, Heterodyning, Microwave radiation, Sensors, Waveguides, Gas lasers, Connectors, Scanning electron microscopy, Gold, Bridges

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Proceedings Article | 29 August 2006 Paper

Terahertz quantum well photodetectors

H. Luo, H. C. Liu, C. Y. Song, Z. R. Wasilewski, A. J. SpringThorpe, J. C. Cao

Proceedings Volume 6308, 63080N (2006) https://doi.org/10.1117/12.680885

KEYWORDS: Terahertz radiation, Quantum wells, Doping, Absorption, Quantum well infrared photodetectors, Photodetectors, Gallium arsenide, Aluminum, Sensors, Semiconducting wafers

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Proceedings Article | 17 May 2006 Paper

Photon upconversion devices

H. C. Liu, H. Luo, D. Ban, M. Buchanan, Z. Wasilewski, A. Spring Thorpe, P. Poole

Proceedings Volume 6206, 620603 (2006) https://doi.org/10.1117/12.665689

KEYWORDS: Light emitting diodes, Upconversion, Internal quantum efficiency, Doping, Photodetectors, Gallium arsenide, Semiconducting wafers, Quantum efficiency, Sensors, External quantum efficiency

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Proceedings Article | 23 January 2006 Paper

THz quantum semiconductor devices

H.C. Liu, H. Luo, D. Ban, M. Wächter, C. Y. Song, Z. R. Wasilewski, M. Buchanan, G. C. Aers, A. J. SpringThorpe, J. C. Cao, S. L. Feng, B. S. Williams, Q. Hu

Proceedings Volume 6029, 602901 (2006) https://doi.org/10.1117/12.667658

KEYWORDS: Terahertz radiation, Doping, Absorption, Quantum well infrared photodetectors, Quantum cascade lasers, Gallium arsenide, Aluminum, Phonons, Waveguides, Temperature metrology

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Proceedings Article | 18 November 2005 Paper

Terahertz quantum well photodetectors

H. Liu, H. Luo, C. Song, Z. Wasilewski, A. SpringThorpe

Proceedings Volume 6010, 601005 (2005) https://doi.org/10.1117/12.629953

KEYWORDS: Terahertz radiation, Absorption, Quantum well infrared photodetectors, Quantum wells, Photodetectors, Gallium arsenide, Aluminum, Doping, Sensors, Infrared radiation

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Proceedings Article | 12 October 2005 Paper

Wafer-fused mid-infrared optical up-converter based on MOCVD grown InSb

D. Ban, H. Luo, H. Liu, Z. Wasilewski, M. Buchanan, Y. Paltiel, A. Raizman, A. Sher

Proceedings Volume 5970, 59700C (2005) https://doi.org/10.1117/12.628587

KEYWORDS: Light emitting diodes, Photodiodes, Mid-IR, Semiconducting wafers, Sensors, Wafer-level optics, Near infrared, Thermography, Absorption, Gallium arsenide

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Proceedings Article | 20 December 2004 Paper

1.5 µm to 0.87 µm optical upconversion by wafer fusion

Hui Luo, Dayan Ban, Huichun Liu, Anthony SpringThorpe, Zbigniew Wasilewski, Margaret Buchanan

Proceedings Volume 5577, (2004) https://doi.org/10.1117/12.566894

KEYWORDS: Light emitting diodes, Semiconducting wafers, Upconversion, Photodetectors, Gallium arsenide, Internal quantum efficiency, Doping, Indium gallium arsenide, Silicon, Wafer-level optics

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Proceedings Article | 9 December 2004 Paper

Ultrafast quantum well infrared photo detector

Peter Grant, Richard Dudek, Lynne Wolfson, Margaret Buchanan, Hui Chun Liu

Proceedings Volume 5578, (2004) https://doi.org/10.1117/12.567260

KEYWORDS: Quantum well infrared photodetectors, Heterodyning, Sensors, Microwave radiation, Waveguides, Gas lasers, Ultrafast phenomena, Quantum wells, Infrared radiation, Infrared photography

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Proceedings Article | 9 December 2004 Paper

A surface micromachined amorphous GexSi1-xOy bolometer for thermal imaging applications

A. H. Z. Ahmed, R. N. Tait, Tania Oogarah, H. C. Liu, Mike Denhoff, G. Sproule, M. J. Graham

Proceedings Volume 5578, (2004) https://doi.org/10.1117/12.567612

KEYWORDS: Silicon, Bolometers, Oxygen, Metals, Germanium, Resistance, Resistors, Semiconductors, Sensors, Silicon films

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Proceedings Article | 4 November 2004 Paper

1.5-µm optical up-conversion: wafer fusion and related issues

Dayan Ban, Hui Luo, Hui-Chun Liu, Anthony SpringThorpe, Zbigniew Wasilewski, Andrew Bezinger, Alexei Bogdanov, Margaret Buchanan

Proceedings Volume 5543, (2004) https://doi.org/10.1117/12.561087

KEYWORDS: Light emitting diodes, Internal quantum efficiency, Doping, Wafer-level optics, Quantum efficiency, Photodetectors, Semiconducting wafers, Imaging devices, Aluminum, CCD cameras

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Proceedings Article | 3 July 2003 Paper

Analog and digital high-speed modulation of quantum cascade laser

Rainer Martini, Claire Gmachl, Roberto Paiella, Federico Capasso, Chris Glazowski, Robert Murawski, Edward Whittaker, Clyde Bethea, Harold Hwang, Deborah Sivco, James Baillargeon, Alfres Cho, H. Liu

Proceedings Volume 4995, (2003) https://doi.org/10.1117/12.480193

KEYWORDS: Modulation, Quantum cascade lasers, Semiconductor lasers, Analog electronics, Eye, Digital modulation, Telecommunications, Data communications, Temperature metrology, Laser damage threshold

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Proceedings Article | 1 July 2003 Paper

Resonant cavity enhanced GaAs/AlGaAs IR detectors

Dmitrii Esaev, S. Matsik, M. Rinzan, A. G. Unil Perera, Hui Liu, Zbigniew Wasilewski, Margaret Buchanan

Proceedings Volume 4999, (2003) https://doi.org/10.1117/12.475401

KEYWORDS: Absorption, Doping, Sensors, Gallium arsenide, Skin, Infrared detectors, Aluminum, Solids, Etching, Infrared sensors

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Proceedings Article | 1 July 2003 Paper

New far-infrared photon detectors

Hui Liu

Proceedings Volume 4999, (2003) https://doi.org/10.1117/12.479624

KEYWORDS: Quantum wells, Quantum well infrared photodetectors, Sensors, Absorption, Quantum dots, Photodetectors, Electrons, Imaging devices, Silicon, Semiconductors

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Proceedings Article | 16 May 2003 Paper

Photocurrent noise in QWIPs: signatures of nonuniform potential distribution over periods

Anna Carbone, H.C. Liu

Proceedings Volume 5111, (2003) https://doi.org/10.1117/12.497040

KEYWORDS: Quantum well infrared photodetectors, Electrons, Quantum wells, Infrared radiation, Numerical analysis, Semiconductors, Physics, Electroluminescent displays, Photodetectors, Modulation

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Proceedings Article | 12 June 2002 Paper

Quantum dot infrared photodetector

Hui Liu, Simon Fafard, Richard Dudek, Zbigniew Wasilewski

Proceedings Volume 4646, (2002) https://doi.org/10.1117/12.470504

KEYWORDS: Quantum well infrared photodetectors, Quantum dots, Electrons, Doping, Infrared photography, Infrared radiation, Photodetectors, Absorption, Phonons, Gallium arsenide

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Proceedings Article | 21 May 2002 Paper

QWIP-LED pixelless imaging

Hui Liu, Emmanuel Dupont, M. Byloos, Margaret Buchanan, Chunying Song, Zbigniew Wasilewski

Proceedings Volume 4650, (2002) https://doi.org/10.1117/12.467658

KEYWORDS: Quantum well infrared photodetectors, Light emitting diodes, Charge-coupled devices, Imaging devices, Sensors, Absorption, Signal detection, Gallium arsenide, Thermography, Electrons

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Proceedings Article | 10 October 2001 Paper

QWIPs beyond FPAs: high-speed room-temperature detectors

Hui Liu, Richard Dudek, Aidong Shen, Emmanuel Dupont, Chunying Song, Zbigniew Wasilewski, Margaret Buchanan

Proceedings Volume 4369, (2001) https://doi.org/10.1117/12.445339

KEYWORDS: Quantum well infrared photodetectors, Doping, Absorption, Sensors, Quantum wells, Thermography, Gallium arsenide, Infrared radiation, Infrared imaging, Staring arrays

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Proceedings Article | 12 June 2001 Paper

Quantum well infrared detection devices

Hui Liu, Chunying Song, Aidong Shen, Richard Dudek, Ming Gao, Emmanuel Dupont, Zbigniew Wasilewski, Margaret Buchanan, P. Wilson, Brad Robinson, David Thompson, Gail Brown, Frank Szmulowicz, James Ehret

Proceedings Volume 4288, (2001) https://doi.org/10.1117/12.429401

KEYWORDS: Quantum well infrared photodetectors, Absorption, Quantum wells, Gallium arsenide, Doping, Visible radiation, Sensors, Solids, Quantum efficiency, Infrared detection

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Proceedings Article | 12 June 2001 Paper

Heterojunction interfacial workfunction detectors for far-infrared applications

A. G. Unil Perera, S. Matsik, Viatcheslav Letov, Hui Liu, Aidong Shen, Ming Gao, Zbigniew Wasilewski, Margaret Buchanan, S. Rolfe

Proceedings Volume 4288, (2001) https://doi.org/10.1117/12.429422

KEYWORDS: Sensors, Quantum well infrared photodetectors, Absorption, Doping, Capacitance, Gallium arsenide, Heterojunctions, Aluminum, Interfaces, Far infrared

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Proceedings Article | 17 April 2001 Paper

GaAs/AlGaAs p-type multiple quantum wells for infrared detection at normal incidence: model and experiment

Frank Szmulowicz, Gail Brown, Hui Liu, Aidong Shen, Zbigniew Wasilewski, Margaret Buchanan

Proceedings Volume 4413, (2001) https://doi.org/10.1117/12.425449

KEYWORDS: Absorption, Quantum well infrared photodetectors, Doping, Temperature metrology, Chlorine, Quantum efficiency, Quantum wells, Gallium arsenide, Polarization, Sensors

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Proceedings Article | 11 July 2000 Paper

Quantum dot devices

Simon Fafard, Hui Liu, Zbigniew Wasilewski, John McCaffrey, M. Spanner, Sylvain Raymond, C. Allen, Karin Hinzer, Jean Lapointe, C. Struby, Ming Gao, Pawel Hawrylak, C. Gould, A. Sachrajda, P. Zawadzki

Proceedings Volume 4078, (2000) https://doi.org/10.1117/12.392130

KEYWORDS: Quantum dots, Spectroscopy, Gallium arsenide, Semiconductor lasers, Indium arsenide, Transmission electron microscopy, Optical storage, Luminescence, Electrons, Quantum wells

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From a recent study of the growth and optical properties of quantum dots (QD's), we demonstrated that artificial atoms with sharp electronic shells can be fabricated with good control, using self-assembled QD's grown by molecular beam epitaxy. Size and shape engineering of the QD's during growth permits the tailoring of their intersublevel energy spacings. We demonstrate a much improved uniformity of the macroscopic ensembles of QD's, with well-resolved electronic shells. In addition to size and shape engineering of the QDS's in the case of single-layer samples, we demonstrate significant improvements in the uniformity of the vertically self-aligned stacked QD's. State-filling spectroscopy of the zero-dimensional transitions between confined electrons and holes demonstrates that the energy levels are readily tunable. One to five confined levels, with an inter-level energy spacing between 25 and 90 meV, are obtained by adjusting the growth temperature or with post-growth annealings. Such QD's having well-defined excited-states have been grown in the active region of devices and results will be presented for lasers, detectors, or for structures displaying optical memory effects. For example, QD laser diodes with well-defined electronic shells are fabricated, and shape-engineered stacks of self-aligned QD's are used to increase the gain in the active region. Lasing is observed in the upper QD shells for small gain media, and progresses towards the QD ground states for longer cavity lengths. We obtained at 77K thresholds for J_th=15 A/cm² for a 2 mm cavity lasing in the first excited state (p-shell), and at 300K for a 5 mm cavity, J_th is ~430A/cm² with lasing in the d-shell. For an increased QD density, J_th is smaller than 100A/cm² at room temperature. For inter- sublevel transitions, we demonstrated broadband normal incidence detection with responsivity approaching 1A/W at a detection wavelength of 5 microns. For interband detection, the photoluminescence decay time of p-i-n diode can be changed from ~3nsec to ~0.3nsec (3Ghz) with a reverse bias. For Qds capped with less than ~10 nm, remarkable charge transfers between QD and surface states lead to optical memory effects lasting over time-scales of several minutes.

Proceedings Article | 19 July 1999 Paper

Waveguide grating coupler with tailored wavelength response

Ming Li, Yan Feng, Baozhu Luo, Hui Liu, Chander Grover

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.355043

KEYWORDS: Waveguides, Quantum well infrared photodetectors, Optical design, Quantum efficiency, Quantum wells, Solar cells, Atmospheric propagation, Wave propagation, Beam propagation method, Holograms

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Proceedings Article | 8 April 1999 Paper

Novel far-infrared detectors for space applications

A. G. Unil Perera, W. Shen, Hui Liu, Margaret Buchanan, William Schaff

Proceedings Volume 3725, (1999) https://doi.org/10.1117/12.344746

KEYWORDS: Sensors, Quantum efficiency, Gallium arsenide, Silicon, Interfaces, Information operations, Absorption, Space telescopes, Doping, Far infrared

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Proceedings Article | 7 April 1999 Paper

Pixelless infrared imaging devices based on the integration of an n-type quantum well infrared photodetector with a near-infrared light-emitting diode

Emmanuel Dupont, Hui Liu, Margaret Buchanan, Zbigniew Wasilewski, Daniel St-Germain, Paul Chevrette

Proceedings Volume 3629, (1999) https://doi.org/10.1117/12.344553

KEYWORDS: Light emitting diodes, Quantum well infrared photodetectors, Mid-IR, Infrared imaging, Imaging devices, Thermography, Absorption, Quantum wells, CCD cameras, Diffraction gratings

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Proceedings Article | 4 December 1998 Paper

Up-conversion devices for 1.5 um imaging

Hui Liu, Ming Gao, Margaret Buchanan, Zbigniew Wasilewski, Philip Poole

Proceedings Volume 3491, (1998) https://doi.org/10.1117/12.328726

KEYWORDS: Light emitting diodes, Sensors, Silicon, Photons, Photodetectors, Near infrared, Imaging devices, Indium gallium arsenide, Charge-coupled devices, Quantum wells

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Proceedings Article | 26 October 1998 Paper

Unique features and capabilities using quantum wells for infrared detection and imaging

Hui Liu

Proceedings Volume 3436, (1998) https://doi.org/10.1117/12.328072

KEYWORDS: Quantum well infrared photodetectors, Quantum wells, Sensors, Imaging devices, Absorption, Light emitting diodes, Infrared detection, Photoresistors, Mercury cadmium telluride, Infrared detectors

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Proceedings Article | 21 August 1998 Paper

GaAs homojunction far-infrared detectors for astronomy applications

A. G. Unil Perera, W. Shen, M. Francombe, Mark Shure, Hui Liu, Margaret Buchanan, William Schaff

Proceedings Volume 3354, (1998) https://doi.org/10.1117/12.317293

KEYWORDS: Sensors, Quantum efficiency, Absorption, Gallium arsenide, Doping, Silicon, Scattering, Astronomy, Staring arrays, Far infrared

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Proceedings Article | 11 August 1998 Paper

QWIP characteristics, performance, advantages, opportunities, and issues

Hui Liu

Proceedings Volume 3553, (1998) https://doi.org/10.1117/12.318095

KEYWORDS: Quantum well infrared photodetectors, Sensors, Absorption, Quantum wells, Mercury cadmium telluride, Infrared detectors, Gallium arsenide, Microbolometers, Infrared radiation, Silicon

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Proceedings Article | 11 August 1998 Paper

Si homojunction internal photoemission far-infrared detectors

A. G. Unil Perera, W. Shen, Hui Liu, Margaret Buchanan, Michael Tanner, Kang Wang

Proceedings Volume 3553, (1998) https://doi.org/10.1117/12.318097

KEYWORDS: Sensors, Silicon, Doping, Quantum efficiency, Absorption, Performance modeling, Infrared sensors, Molecular beam epitaxy, Staring arrays, Far infrared

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Proceedings Article | 22 July 1998 Paper

Comparison of intersubband GaAs/AlGaAs multiple quantum well infrared photodetectors on GaAs and GaAs-on-Si substrates

Deepak Sengupta, Sarath Gunapala, Thomas George, Sumith Bandara, C.-N. Chang-Chien, Rosa Leon, S. Kayali, Haochung Kuo, Wei-Chiao Fang, Hui Liu, Gregory Stillman

Proceedings Volume 3379, (1998) https://doi.org/10.1117/12.317609

KEYWORDS: Gallium arsenide, Quantum well infrared photodetectors, Sensors, Silicon, Absorption, Quantum wells, Infrared radiation, Temperature metrology, Infrared sensors, Crystals

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Proceedings Article | 8 April 1998 Paper

P-type quantum well infrared photodetectors and pixelless long-wavelength infrared imaging devices

Hui Liu, L. Li, Louis Allard, Margaret Buchanan, Zbigniew Wasilewski, Gail Brown, Frank Szmulowicz, S. Hegde

Proceedings Volume 3287, (1998) https://doi.org/10.1117/12.304478

KEYWORDS: Quantum well infrared photodetectors, Imaging devices, Light emitting diodes, Quantum wells, Gallium arsenide, Absorption, Polarization, Long wavelength infrared, Sensors, Infrared imaging

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Proceedings Article | 8 April 1998 Paper

High-performance GaAs homojunction far-infrared detectors

A. G. Unil Perera, W. Shen, Hui Liu, Margaret Buchanan, William Schaff

Proceedings Volume 3287, (1998) https://doi.org/10.1117/12.304491

KEYWORDS: Sensors, Absorption, Quantum efficiency, Gallium arsenide, Doping, Silicon, Interfaces, Multilayers, Scattering, Far infrared

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Proceedings Article | 7 April 1998 Paper

Mid-infrared interband cascade emission in InAs/GaInSb/AlSb type-II heterostructures

Hui Liu, Emmanuel Dupont, John McCaffrey, Margaret Buchanan, Dongxu Zhang, Rui Q. Yang, C.H. Lin, Stefan Murry, Shin Shem Pei

Proceedings Volume 3284, (1998) https://doi.org/10.1117/12.304456

KEYWORDS: Mid-IR, Gallium antimonide, Quantum efficiency, Quantum wells, Quantum cascade lasers, Light emitting diodes, Indium arsenide, Heterojunctions, Superlattices, Luminescence

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Proceedings Article | 2 January 1998 Paper

Intermixed quantum well photodetectors for long-wavelength detection

Deepak Sengupta, A. Curtis, Jay Malin, Haochung Kuo, K. Hseih, Milton Feng, Gregory Stillman, A. Kar, Jyotirmoy Mazumder, Hui Liu, Wen Wang

Proceedings Volume 3211, (1998) https://doi.org/10.1117/12.345368

KEYWORDS: Quantum wells, Photodetectors, Annealing, Quantum well infrared photodetectors, Sensors, Infrared sensors, Sensor performance, Absorption

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Proceedings Article | 13 August 1997 Paper

Novel and simply producible large-area focal plane infrared imaging device based on quantum wells

Hui Liu, Louis Allard, Margaret Buchanan, Zbigniew Wasilewski

Proceedings Volume 3061, (1997) https://doi.org/10.1117/12.280344

KEYWORDS: Light emitting diodes, Charge-coupled devices, Quantum well infrared photodetectors, Photons, Imaging devices, Long wavelength infrared, Infrared imaging, Quantum wells, CCD cameras, Sensors

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Proceedings Article | 13 August 1997 Paper

Nuclear radiation effects on GaAs/AlGaAs quantum well infrared photodetectors: II

Hui Liu, L. Li, Shyam Khanna, Margaret Buchanan

Proceedings Volume 3061, (1997) https://doi.org/10.1117/12.280390

KEYWORDS: Particles, Quantum well infrared photodetectors, Ions, Oxygen, Radiation effects, Gold, Nuclear radiation, Measurement devices, Gallium arsenide, Sensors

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Proceedings Article | 2 May 1997 Paper

Long-wavelength IR interband cascade light-emitting diodes

Rui Q. Yang, C.H. Lin, Stefan Murry, Dongxu Zhang, Shin Shem Pei, Emmanuel Dupont, Hui Liu, Margaret Buchanan

Proceedings Volume 3001, (1997) https://doi.org/10.1117/12.273798

KEYWORDS: Electroluminescence, Quantum wells, Light emitting diodes, Quantum cascade lasers, Gallium antimonide, Long wavelength infrared, Lead, Phonons, Scattering, Indium arsenide

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Proceedings Article | 15 April 1997 Paper

Pixelless infrared-imaging device concept

Hui Liu

Proceedings Volume 2999, (1997) https://doi.org/10.1117/12.271185

KEYWORDS: Charge-coupled devices, Light emitting diodes, Quantum well infrared photodetectors, Infrared imaging, Quantum wells, Imaging devices, Sensors, Thermography, Infrared radiation, Photoresistors

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Proceedings Article | 15 April 1997 Paper

Nonlinear photoresponse of quantum well infrared photodetectors at high-excitation power

Maxim Ershov, Hui Liu, Margaret Buchanan, Zbigniew Wasilewski

Proceedings Volume 2999, (1997) https://doi.org/10.1117/12.271210

KEYWORDS: Quantum well infrared photodetectors, Infrared radiation, Quantum wells, Information operations, Absorption, Signal detection, Infrared photography, Carbon dioxide lasers, Chlorine, Computer simulations

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Proceedings Article | 22 October 1996 Paper

GaAs homojunction interfacial workfunction internal photoemission far-infrared detectors

Henry Yuan, A. G. Unil Perera, M. Francombe, Sisira Gamage, Hui Liu, Margaret Buchanan, William Schaff

Proceedings Volume 2816, (1996) https://doi.org/10.1117/12.255156

KEYWORDS: Sensors, Doping, Gallium arsenide, Quantum efficiency, Absorption, Temperature metrology, Photons, Silicon, Neon, Interfaces

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Proceedings Article | 17 June 1996 Paper

Nuclear radiation effects on GaAs/AlGaAs quantum well infrared photodetectors

Hui Liu, P. Wilson, Margaret Buchanan, Shyam Khanna

Proceedings Volume 2746, (1996) https://doi.org/10.1117/12.243034

KEYWORDS: Radiation effects, Quantum well infrared photodetectors, Sensors, Information operations, Nuclear radiation, Gallium arsenide, Infrared radiation, Defense and security, Mercury cadmium telluride, Semiconductors

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Proceedings Article | 19 April 1996 Paper

Optoelectronic integration of quantum well intersubband photodetectors for two-dimensional array fabrication

Hui Liu, Jianmeng Li, Zbigniew Wasilewski, Margaret Buchanan

Proceedings Volume 2694, (1996) https://doi.org/10.1117/12.238395

KEYWORDS: Light emitting diodes, Quantum well infrared photodetectors, Staring arrays, Quantum wells, Gallium arsenide, Silicon, Near infrared, Sensors, Photodetectors, Thermography

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Proceedings Article | 12 April 1996 Paper

Quantum well intersubband heterodyne infrared detection up to 82 GHz

Jianmeng Li, Hui Liu, Elliott Brown, K. McIntosh, Kirby Nichols, M. Manfra

Proceedings Volume 2685, (1996) https://doi.org/10.1117/12.237706

KEYWORDS: Heterodyning, Microwave radiation, Quantum well infrared photodetectors, Carbon dioxide lasers, Quantum wells, Signal detection, Sensors, Infrared detection, Infrared radiation, Photodetectors

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Proceedings Article | 8 September 1995 Paper

Integrated quantum well intersubband photodetector and light-emitting diode for thermal imaging

Hui Liu, Jianmeng Li, Zbigniew Wasilewski, Margaret Buchanan

Proceedings Volume 2552, (1995) https://doi.org/10.1117/12.218295

KEYWORDS: Quantum well infrared photodetectors, Light emitting diodes, Staring arrays, Quantum wells, Silicon, Near infrared, Thermography, Gallium arsenide, Photodetectors, Sensors

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Proceedings Article | 17 October 1994 Paper

Recent results on quantum-well intersubband infrared detectors

Hui Liu

Proceedings Volume 2269, (1994) https://doi.org/10.1117/12.188631

KEYWORDS: Quantum well infrared photodetectors, Sensors, Gallium arsenide, Quantum wells, Infrared detectors, Standards development, Resistance, Long wavelength infrared, Infrared sensors, Molecular beam epitaxy

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Proceedings Article | 11 May 1994 Paper

Regular and periodic peaks in device current, capacitance, and intersubband photocurrent from a multiple double-well structure

Hui Liu, Jianmeng Li, Margaret Buchanan, Zbigniew Wasilewski, J. Simmons

Proceedings Volume 2139, (1994) https://doi.org/10.1117/12.175723

KEYWORDS: Capacitance, Quantum wells, Stereolithography, Infrared radiation, Information operations, Superlattices, Silicon, Resistance, Modulation, Resistors

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SPIE Journal Paper | 1 May 1994

Recent progress on GaAs quantum well intersubband infrared photodetectors

Hui Liu

OE, Vol. 33, Issue 05, (May 1994) https://doi.org/10.1117/12.10.1117/12.165817

KEYWORDS: Quantum well infrared photodetectors, Sensors, Quantum wells, Gallium arsenide, Electrons, Infrared radiation, Infrared sensors, Photodetectors, Infrared detectors, Resistance

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Proceedings Article | 19 November 1993 Paper

Dark current mechanism and the cause of the current-voltage asymmetry in quantum-well intersubband photodetectors

Hui Liu, Alan Steele, Zbigniew Wasilewski, Margaret Buchanan

Proceedings Volume 1985, (1993) https://doi.org/10.1117/12.162783

KEYWORDS: Quantum wells, Photodetectors, Long wavelength infrared, Optoelectronics, Physical phenomena, Optoelectronic devices, Systems modeling, Sensors

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