Screening and testing methods of short-wave infrared area array detectors for synchronous monitoring atmospheric corrector

Abstract

In order to select the devices with high reliability and stability with the potential of aerospace application from the scientific shortwave infrared array detector, the performance test and screening experiment of the shortwave infrared array COMS photoelectric conversion detector equipped with Synchronous Monitoring Atmospheric Corrector were carried out. Firstly, according to the aerospace application requirements, the main performance parameters of shortwave infrared array CMOS devices are simulated and analyzed. Secondly, a set of special image acquisition system of shortwave infrared array CMOS device is designed. Aiming at the performance parameters which can cover the whole spectrum, such as photo response nonuniformity, defect pixels, nonlinearity error and so on, a wide spectrum testing platform based on segmented uniform light source is built. Aiming at the monochromatic performance parameters such as quantum efficiency, a multispectral testing platform based on continuous tunable light source is built. Finally, the performance screening experiments of shortwave infrared array CMOS detectors are carried out by using these test systems, and performance parameters of the tested devices are obtained. The experimental results show that the photo response nonuniformity of the optimized shortwave infrared CMOS detector is 2.79% in 1380 nm band, the number of defect pixels is 4, the maximum non-repeatability of quantum efficiency is 2.18%, and the nonlinearity error is less than 1.16%. The index of the selected device meets the needs of aerospace applications. The research results provide a reference for the screening method and performance evaluation of shortwave infrared array detectors.