Dr. Xifeng Qian Profile

Dr. Xifeng Qian

at Univ of Massachusetts Lowell

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 24 February 2017 Presentation + Paper

Waveguide development using wafer fused GaP/GaAs in THz quantum cascade lasers

Neelima Chandrayan, Xifeng Qian, William Goodhue

Proceedings Volume 10103, 101031S (2017) https://doi.org/10.1117/12.2252716

KEYWORDS: Terahertz radiation, Waveguides, Refractive index, Semiconducting wafers, Quantum cascade lasers, Gallium arsenide, Waveguide lasers, Waveguide modes, Doping, Resistance, Mirrors, Laser development

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Proceedings Article | 14 March 2015 Paper

Frequency tuning of THz quantum cascade lasers

Xifeng Qian, Andriy Danylov, Alexander Light, Jerry Waldman, Neal Erickson

Proceedings Volume 9362, 93620U (2015) https://doi.org/10.1117/12.2175696

KEYWORDS: Terahertz radiation, Quantum cascade lasers, Microwave radiation, Spectroscopy, Continuous wave operation, Spatial light modulators, Extremely high frequency, Absorption, Mirrors

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Proceedings Article | 1 March 2012 Paper

Long-term frequency and amplitude stability of a solid-nitrogen-cooled, continuous wave THz quantum cascade laser

Andriy Danylov, Jerry Waldman, Alexander Light, Thomas Goyette, Robert Giles, Xifeng Qian, Neelima Chandrayan, William Goodhue, William Nixon

Proceedings Volume 8261, 82610D (2012) https://doi.org/10.1117/12.911948

KEYWORDS: Quantum cascade lasers, Terahertz radiation, Nitrogen, Temperature metrology, Continuous wave operation, Solids, Diodes, Liquids, Heterodyning, Receivers

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Proceedings Article | 28 February 2012 Paper

One-half milliwatt 2.31 THz continuous-wave QCL operating at 77K

Xifeng Qian, Neelima Chandrayan, Shivashankar Vangala, William Goodhue, Andriy Danylov, Jerry Waldman, Christopher Baird, Robert Giles, William Nixon

Proceedings Volume 8261, 82610K (2012) https://doi.org/10.1117/12.906732

KEYWORDS: Terahertz radiation, Waveguides, Metals, Quantum cascade lasers, Continuous wave operation, Annealing, Liquids, Heterodyning, Surface plasmons

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Proceedings Article | 21 May 2011 Paper

High-operating temperature (HOT) broadband quantum-dot infrared photodetector

Puminun Vasinajindakaw, Xuejun Lu, Xifeng Qian, Shivashankar Vangala, William Goodhue

Proceedings Volume 8012, 80122X (2011) https://doi.org/10.1117/12.887362

KEYWORDS: Quantum well infrared photodetectors, Infrared radiation, Photodetectors, Infrared photography, Quantum dots, Thermography, Mid-IR, Gallium arsenide, Applied physics, Infrared technology

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Proceedings Article | 21 May 2011 Paper

Thermo-electrically cooled shortwave infrared and longwave infrared dual-band quantum-dot photodetector

Jarrod Vaillancourt, Puminun Vasinajindakaw, Xuejun Lu, Xifeng Qian, Shivashankar Vangala, William Goodhue

Proceedings Volume 8012, 80120O (2011) https://doi.org/10.1117/12.887363

KEYWORDS: Long wavelength infrared, Infrared radiation, Quantum well infrared photodetectors, Photodetectors, Infrared imaging, Infrared photography, Thermography, Sensors, Quantum dots, Short wave infrared radiation

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Proceedings Article | 5 May 2010 Paper

Multispectral infrared photodetector with carbon nanotube flexible electronic circuits

Wen Hong, Puminun Vasinajindakaw, Jarrod Vaillancourt, Haiyan Zhang, Guiru Gu, Runyu Liu, Xuejun Lu, Xifeng Qian, Shivashankar Vangala, William Goodhue

Proceedings Volume 7679, 767906 (2010) https://doi.org/10.1117/12.850701

KEYWORDS: Photodetectors, Flexible circuits, Infrared radiation, Image processing, Infrared photography, Electronic circuits, Sensors, Infrared imaging, Carbon nanotubes, Integration

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Proceedings Article | 19 February 2010 Paper

Coherent imaging at 2.4 THz with a CW quantum cascade laser transmitter

Andriy Danylov, Thomas Goyette, Jerry Waldman, Michael Coulombe, Andrew Gatesman, Robert Giles, Xifeng Qian, Neelima Chandrayan, Shivashankar Vangala, Krongtip Termkoa, William Goodhue, William Nixon

Proceedings Volume 7601, 760105 (2010) https://doi.org/10.1117/12.843197

KEYWORDS: Terahertz radiation, Transmitters, Quantum cascade lasers, Coherence imaging, Receivers, Transceivers, Radar, Molecular lasers, Diodes, Spherical lenses

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Proceedings Article | 12 February 2010 Paper

Mid-infrared emitters utilizing intersublevel transitions in self assembled InAs quantum dots

T. Ribaudo, B. Passmore, D. Adams, X. Qian, S. Vangala, W. Goodhue, E. Shaner, S. Lyon, D. Wasserman

Proceedings Volume 7616, 76161A (2010) https://doi.org/10.1117/12.843033

KEYWORDS: Mid-IR, Electroluminescence, Quantum dots, Plasmonics, Quantum cascade lasers, Gallium arsenide, Indium arsenide, Quantum wells, Electrons, Heterojunctions

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Proceedings Article | 23 January 2010 Paper

A LWIR quantum dot infrared photodetector working at 298K

Jarrod Vaillancourt, Puminun Vasinajindakaw, Wen Hong, Xuejun Lu, Xifeng Qian, Shivashankar Vangala, William Goodhue

Proceedings Volume 7608, 760821 (2010) https://doi.org/10.1117/12.847081

KEYWORDS: Quantum well infrared photodetectors, Long wavelength infrared, Photodetectors, Infrared radiation, Infrared photography, Quantum dots, Infrared imaging, Sensors, Gallium arsenide, Cryogenics

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Showing 5 of 10 publications

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