Research on high sensitivity type-II superlattice long wavelength infrared detection system
Received:April 08, 2018  Revised:February 16, 2019  download
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Author NameAffiliationE-mail
RAO Peng Key Laboratory of Infrared System Detection and Imaging Technology,Chinese Academy of Sciences peng_rao@mail.sitp.ac.cn 
zhanglei Beijing Institute of Tracking and Communication Technology  
ZHAO Yun-Feng Key Laboratory of Intelligent Infrared Perception, Chinese Academy of Sciences,China
University of Chinese Academy of Sciences,China 
zhaoyf_08@163.com 
lufuxing Key Laboratory of Intelligent Infrared Perception, Chinese Academy of SciencesUniversity of Chinese Academy of Sciences  
XU Jia-Jia Key Laboratory of Infrared Materials and Detectors,Shanghai Institute of Technical Physics,Chinese Academy of Sciences  
WANG Fang-Fang Key Laboratory of Infrared Materials and Detectors,Shanghai Institute of Technical Physics,Chinese Academy of Sciences  
Abstract:A high-sensitivity long wavelength infrared detection system was developed based on the type-II superlattice 320 × 256 long wavelength infrared detector. The technical specifications of the type-II superlattice infrared detector and the main structure and working mode of the infrared system are introduced. In order to give full play to the sensitivity of the infrared detector, a high-sensitivity information acquisition system was developed. The software and hardware design of the information acquisition system is introduced. The information acquisition system adopted an adaptive signal conditioning technology to reduce information acquisition noise and improve sensitivity and dynamic range of the infrared system. Finally, the information acquisition noise test, system performance test and outfield imaging experiment are carried out for the whole long wavelength infrared detection system. The experimental results show that the information acquisition noise of the long wave infrared detection system is 0.065mV, the NETD is19.6mK, and the blackbody detectivity is 7.72×1010cm√Hz/W. The quality of outfield imaging is good, the details of the images are clear and the contrast is high. The long wavelength infrared detection system is conducive to the application of type-II superlattice infrared detectors in high sensitivity long wavelength infrared remote sensing.
keywords:high-sensitivity  type-II superlattice  long wavelength infrared
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Copyright:《Journal of Infrared And Millimeter Waves》