Prof. Junqi Liu Profile

Prof. Junqi Liu

at Institute of Semiconductors CAS

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 6 November 2023 Paper

Optical frequency comb for microwave injection of 8.6μm room temperature mid-infrared quantum cascade laser

Xu Gao, Yu Ma, Xiaohua Wang, Zhipeng Wei, Junqi Liu

Proceedings Volume 12921, 1292142 (2023) https://doi.org/10.1117/12.2691735

KEYWORDS: Quantum cascade lasers, Frequency combs, Mid-IR, Laser optics

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Proceedings Article | 15 March 2023 Poster + Paper

Constructive emission from terahertz quantum cascade laser array integrated with Talbot cavity

Yunfei Xu, Quanyong Lu, Weijiang Li, Yu Ma, Ning Zhuo, Junqi Liu, Jinchuan Zhang, Shenqiang Zhai, Shuman Liu, Lijun Wang, Fengqi Liu

Proceedings Volume 12430, 124301B (2023) https://doi.org/10.1117/12.2647978

KEYWORDS: Quantum cascade lasers, Absorption, Waveguides, Terahertz radiation, Imaging spectroscopy, Scanning electron microscopy, Quantum devices, Vacuum, Spectroscopes, Semiconductor materials

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Proceedings Article | 31 January 2023 Paper

Buried heterostructure terahertz quantum cascade lasers for epilayer-down mounting with high continuous-wave power

Yu Ma, Wei-Jiang Li, Yun-Fei Xu, Jun-Qi Liu, Ning Zhuo, Ke Yang, Jin-Chuan Zhang, Shen-Qiang Zhai, Shu-Man Liu, Li-Jun Wang, Feng-Qi Liu

Proceedings Volume 12505, 125050Z (2023) https://doi.org/10.1117/12.2665324

KEYWORDS: Quantum cascade lasers, Continuous wave operation, Terahertz radiation, Terahertz sources, High power lasers

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Proceedings Article | 31 January 2023 Paper

High performance very long wave infrared quantum cascade detector

K. Guo, K. Li, Y. X. Zhu, J. Q. Liu, S. M. Liu, F. Q. Liu, X. H. Wang, Z. P. Wei

Proceedings Volume 12505, 1250506 (2023) https://doi.org/10.1117/12.2664941

KEYWORDS: Long wavelength infrared, Infrared detectors, Quantum IR detectors, Photovoltaic detectors

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Proceedings Article | 4 March 2022 Presentation + Paper

High-definition video broadcasting with a room-temperature quantum cascade laser emitting in the long-wave infrared domain

Pierre Didier, Ke Yang, Olivier Spitz, Alice Guillaume-Manca, Junqi Liu, Frédéric Grillot

Proceedings Volume 12021, 120210D (2022) https://doi.org/10.1117/12.2608511

KEYWORDS: Quantum cascade lasers, Video, Modulation, Long wavelength infrared, Signal detection, Free space optics, Mid-IR

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SPIE Journal Paper | 27 April 2016

Low-threshold external-cavity quantum cascade laser around 7.2 μm

Zhibin Zhao, Lijun Wang, Zhiwei Jia, Jinchuan Zhang, Fengqi Liu, Ning Zhuo, Shenqiang Zhai, Junqi Liu, Zhanguo Wang

OE, Vol. 55, Issue 04, 046116, (April 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.4.046116

KEYWORDS: Continuous wave operation, Quantum cascade lasers, Antireflective coatings, Aluminum, Reflectivity, Coating, Refractive index, Diffraction gratings, Temperature metrology

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Proceedings Article | 20 November 2014 Paper

Very long wave infrared quantum cascade detectors

Jun-qi Liu, Shen-qiang Zhai, Feng-qi Liu, Zhan-guo Wang

Proceedings Volume 9300, 93000V (2014) https://doi.org/10.1117/12.2071152

KEYWORDS: Solar energy, Infrared radiation, Sensors, Infrared detectors, Long wavelength infrared, Infrared sensors, Quantum wells, Quantum IR detectors, Phonons, Gallium arsenide

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Proceedings Article | 8 September 2011 Paper

Strain-compensated InP-based InGaAsInAlAs quantum cascade infrared detectors for 3-5μm atmospheric window

Shen-qiang Zhai, Jun-qi Liu, Ning Kong, Feng-qi Liu, Lu Li, Li-jun Wang, Zhan-guo Wang

Proceedings Volume 8193, 81931X (2011) https://doi.org/10.1117/12.900225

KEYWORDS: Quantum wells, Infrared detectors, Atmospheric sensing, Atmospheric optics, Sensors, Infrared sensors, Infrared imaging, Free space optical communications, Stereoscopy, Quantum well infrared photodetectors

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Proceedings Article | 20 August 2011 Paper

Surface emitting quantum cascade lasers for sensing and medical diagnosis

Jun-qi Liu, Jian-yan Chen, Wan-feng Liu, Wan-hong Guo, Yu-chao Jiang, Feng-qi Liu, Lu Li, Li-jun Wang, Zhan-guo Wang

Proceedings Volume 8192, 81921P (2011) https://doi.org/10.1117/12.900189

KEYWORDS: Quantum cascade lasers, Waveguides, Silicon, Medical diagnostics, Temperature metrology, Fiber Bragg gratings, Wet etching, Double patterning technology, Optical design, Holography

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Proceedings Article | 12 August 2011 Paper

Single-mode operation of terahertz quantum cascade lasers

J. Chen, J. Liu, F. Liu, L. Li, L. Wang, Z. Wang

Proceedings Volume 8195, 81950G (2011) https://doi.org/10.1117/12.900173

KEYWORDS: Terahertz radiation, Quantum cascade lasers, Waveguides, Photonic crystals, Waveguide modes, Metals, Dispersion, Gallium arsenide, Surgery, Resonators

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Showing 5 of 10 publications

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