Broadband quantum cascade detectors with a cutoff wavelength of 20 μm

Yu Chen,Yixuan Zhu,Kai Guo,Shenqiang Zhai,Ning Zhuo,Jinchuan Zhang,Shuman Liu,Lijun Wang,Fengqi Liu,Junqi Liu

Infrared Physics & Technology（2024）

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摘要

•Designed active region realizes the very long wave infrared quantum cascade detector.•Demonstration structure improves responsivity and reduces dark current leakage.•Diagonal transition structure improves extraction efficiency.•Miniband realizes high absorption strength and broadband optical detection.

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关键词

Quantum cascade detector,Very long wave infrared band,Broadband

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