首页|Very long wave infrared quantum cascade detector based on modular band structure

Very long wave infrared quantum cascade detector based on modular band structure

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The optoelectronic performance of quantum cascade detectors(QCDs)is highly sensitive to the design of the energy level structure,leading to the inability of a single structure to achieve broad wavelength tuning.To address this issue,we propose and demonstrate a modular concept for very long wave infrared(VLWIR)QCDs based on a miniband diagonal transition scheme.The modular design makes the wavelength tuning only need to be adjusted for the absorption quantum well module rather than for the whole active region.Theoretical simulation shows that the wavelength tuning range is 39.6 meV(～14-30 μm).To prove the feasibility of the scheme,three samμles with different absorption well widths were fabricated and characterized.At 10 K,the response wavelengths of the three QCDs are 14,16,and 18 μm,respectively,corresponding to responsivities and detectivities exceeding 2 mA/W and 1 × 1010 Jones.

quantum cascade detectorvery long wave infraredmodular band structureminiband diagonal transitionwide tuning range

郭凯、陈雨、朱怡璇、黎昆、翟慎强、刘峰奇、唐吉龙、王晓华、魏志鹏、刘俊岐

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State Key Laboratory of High Power Semiconductor Lasers,School of Physics,Changchun University of Science and Technology,Changchun 130022,China

Key Laboratory of Semiconductor Materials Science,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China

Center of Materials Science and Optoelectronics Technology,University of Chinese Academy of Sciences,Beijing 101408,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaKey Program of the Chinese Academy of SciencesYouth Innovation Promotion Association of the Chinese Academy of Sciences

6183501162335015123938306222240812274404XDB430000002022112

2024

10.3788/COL202422.083701

中国光学快报(英文版)
中国光学学会 中国科学院上海光学精密机械研究所

中国光学快报(英文版)

CSTPCD
影响因子：1.305
ISSN：1671-7694
年,卷(期)：2024.22(8)