Abstract

The designs of a warm (uncooled) aperture diaphragm in a gas-filled cryostat with a matrix photodetector sensitive in the infrared spectral range are studied numerically and experimentally. It is shown that for the chosen design of a warm aperture diaphragm, a \(384\times 288\) pixel matrix photodetector is cooled by liquid nitrogen to operating temperatures (85 K) in less than 40 seconds, and by a throttle microcooler in 15 seconds, while maintaining the standard sensitivity of photodetectors based on cadmium–mercury–tellurium (CMT) structures.

中文翻译：

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热孔径光阑在冷却小型矩阵光电探测器中的应用

摘要

数值和实验研究了充气低温恒温器中带有矩阵光电探测器的温暖（未冷却）孔径光阑的设计，该矩阵光电探测器对红外光谱范围敏感。结果表明，对于选定的暖光圈膜片设计，\（384 \乘以288 \）像素矩阵光电探测器在不到40秒的时间内被液氮冷却至工作温度（85 K），并由节气门微冷却器冷却。 15秒，同时保持基于镉-汞-碲（CMT）结构的光电探测器的标准灵敏度。