High-speed quantum cascade detector with frequency response of over 20 GHz

被引：10

作者：

Dougakiuchi, Tatsuo ^{[1
]}

Edamura, Tadataka ^{[1
]}

机构：

[1] Hamamatsu Photon KK, Cent Res Lab, Hamakita Ku, 5000 Hirakuchi, Hamamatsu, Shizuoka 4348601, Japan

来源：

SPIE FUTURE SENSING TECHNOLOGIES | 2019年 / 11197卷

关键词：

quantum cascade detector; mid-infrared; high-speed; heterodyne beat;

D O I：

10.1117/12.2542649

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

We present a high-speed quantum cascade detector (QCD), a mid-infrared photodetector using intersubband transition, with a frequency response of over 20 GHz. The frequency response of an uncooled QCD with the response wavelength of around 4.5 mu m was evaluated with a heterodyne beat measurement using two distributed feedback single mode quantum cascade lasers, and -3 and -20 dB cut-off frequency was obtained to be 5 and 20 GHz. The maximum frequency observed in the experiment was 26 GHz with a signal-to-noise ratio of over 20 dB. These wide band mid-infrared photodetectors are expected to offer a high-speed molecular sensing, free-space optical communication, and the other applications.

引用

页数：3

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