Study on the thermal imaging application of quantum cascade detectors
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- 作者：Shen-Qiang Zhai ; Jun-Qi Liu ; Xue-Jiao Wang ; Song Tan ; Feng-Qi Liu ; Zhan-Guo Wang
- 关键词：Photodetector ; Quantum cascade ; Infrared ; Thermal imaging
- 刊名：Infrared Physics and Technology
- 出版年：March, 2014
- 年：2014
- 卷：63
- 期：Complete
- 页码：17-21
- 全文大小：823 K
文摘
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 渭m, and the Noise Equivalent Power (NEP) reaches 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.