用于天文成像探测的IRFPA性能参数测试

发布时间：2018-06-06 11:58

本文选题：天文 + IRFPA探测器　；参考：《影像科学与光化学》2017年02期

【摘要】：天体的红外成像探测在天文学领域中有其特殊和重要的作用,高性能红外探测器是红外天文观测的关键器件,因此红外焦平面阵列探测器性能参数的测试评价对于红外天文观测具有非常重要的意义。针对天文应用的特殊性,通过分析红外焦平面阵列(Infrared focal plane array,IRFPA)探测器的特点,给出了增益、读出噪声、线性和暗流等性能参数的测试原理和方法,建立了测试平台,该测试平台可实现1~14μm波长范围的IRFPA探测器性能参数测试;完成了一台采用国产3~5μm HgCdTe芯片研制的IRFPA探测器性能参数的测试。测试结果表明,该IRFPA探测器的线性度非常好,可以达到99.9%以上,但读出噪声和暗电流较大,与国外为天文观测研制的高性能探测器相比尚有很大的差距。
[Abstract]:Infrared imaging detection of celestial bodies plays a special and important role in the field of astronomy. High performance infrared detectors are the key devices of infrared astronomical observation. Therefore, the measurement and evaluation of infrared focal plane array (IRFPA) detector performance parameters is of great significance for infrared astronomical observation. According to the particularity of astronomical application, the characteristics of infrared focal plane array IRFPA detector are analyzed, and the principle and method of performance parameters such as gain, readout noise, linearity and undercurrent are given, and the test platform is established. The test platform can test the performance parameters of IRFPA detector in the wavelength range of 1 ~ 14 渭 m, and complete the performance parameter test of a IRFPA detector developed by using a 3 ~ 5 渭 m HgCdTe chip made in China. The test results show that the linearity of the IRFPA detector is very good, which can reach 99.9%, but the readout noise and dark current are large, which is far from the high performance detector developed for astronomical observation abroad.
【作者单位】：中国科学院国家天文台;中国科学院太阳活动重点实验室;中国科学院天文光学重点实验室;
【基金】：国家自然科学基金(11173036,11673038,11273034) 中国科学院太阳活动重点实验室开放课题(KLSA201616,KLSA201515)资助
【分类号】：TN215

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