Research progress in terahertz quantum-cascade lasers and quantum-well photodetectors

doi:10.1088/1674-1056/aba945

Abstract

As semiconductor devices, the terahertz quantum-cascade laser is a coherent source based on intersubband transitions of unipolar carriers while the terahertz quantum-well photodetector is a kind of detector which matches the laser frequency. They are solid-state, electrically operated, and can be easily integrated with other components. This paper reviews the state of the art for the design, working performance, and future directions of the two devices. Their applications in photoelectric characterization and imaging are also discussed.

Keywords: terahertz semiconductor device photoelectric characterization imaging system

Received: 04 May 2020
Revised: 15 July 2020
Accepted manuscript online:

PACS:	42.55.Px	(Semiconductor lasers; laser diodes)
	85.60.Bt	(Optoelectronic device characterization, design, and modeling)
	42.30.-d	(Imaging and optical processing)
	95.85.Gn	(Far infrared (10-300 μm))

Fund:

Project supported by the National Key R&D Program of China (Grant No. 2017YFA0701005), the National Natural Science Foundation of China (Grant Nos. 61927813, 61775229, 61704181, and 61991432), and the Shanghai International Cooperation Project, China (Grant No. 18590780100).

Corresponding Authors: Jun-Cheng Cao
E-mail: jccao@mail.sim.ac.cn

Cite this article:

Zhi-Yong Tan(谭智勇), Wen-Jian Wan(万文坚), Jun-Cheng Cao(曹俊诚) Research progress in terahertz quantum-cascade lasers and quantum-well photodetectors 2020 Chin. Phys. B 29 084212

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