Study on the thermal imaging application of quantum cascade detectors

被引：4

作者：

Zhai, Shen-Qiang ^{[1
]}

Liu, Jun-Qi ^{[1
]}

Wang, Xue-Jiao ^{[1
]}

Tan, Song ^{[1
]}

Liu, Feng-Qi ^{[1
]}

Wang, Zhan-Guo ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, Beijing Key Lab Low Dimens Semicond Mat & Devices, Beijing 100083, Peoples R China

来源：

INFRARED PHYSICS & TECHNOLOGY | 2014年 / 63卷

关键词：

Photodetector; Quantum cascade; Infrared; Thermal imaging; WELL; PERFORMANCE;

D O I：

10.1016/j.infrared.2013.11.014

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A 2D mechanical scanning setup was constructed, and was used to evaluate the potential of quantum cascade detector (QCD) for IR imaging. The peak responsivity of the studied QCD is 22.3 mA/W at 9.3 mu m, and the Noise Equivalent Power (NEP) reaches 6.7 x 10(-10) W/root Hz at temperature of 82 K. The Noise Equivalent Temperature Difference (NETD) for this imaging system is estimated to be 102.6 mK. With this experimental setup, thermal images of an operating electric soldering iron and a projection lamp at about 310 K are obtained. The image of the projection lamp demonstrates the feasibility of human body imaging with this QCD. Our research provides a proof-of-concept demonstration of thermal imaging with QCDs and displays that QCDs are potentially useful for thermal imaging applications. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：17 / 21

页数：5

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