InSb焦平面探测器的J-T制冷器  

J\|T cooler of InSb focal plane detector

作　　者：黄水安[1] 刘永春[1] 王巍[1] 

机构地区：[1]中国空空导弹研究院,河南洛阳471009

出　　处：《红外与激光工程》2002年第6期530-533,共4页Infrared and Laser Engineering

摘　　要：论述了InSb红外探测器制冷的必要性及所需的制冷温度,分析了InSb焦平面探测器对制冷的要求比分立引出(或单元)探测器更为严格的原因,指出InSb焦平面探测器的制冷温度在77～90K区间,其探测率变化不大;在137K时,分立引出(或单元)InSb探测器仍有较高输出信噪比,但这时焦平面探测器的SNR却有较严重的下降。试验表明,采用J T节流制冷器的InSb焦平面探测器可以实现高性能。The necessity of cooling of InSb infrared detector and cooling temperature are described. The reasons why the cooling temperature of InSb focal plane detector is stricter than the single element detector are analyzed. It is shown that when the cooling temperature is 77～90K, the detectivity does not change very much. The single element detector still has higher signal\|noise ratio at 137K, but signal\|noise ratio of the focal plane detector drops greatly. The test results indicate that the focal plane detector using J\|T cooler can achieve high performance.

关 键 词：INSB 多元红外探测器 焦平面探测器 J-T制冷器 量子效率 铟锑二元化合物 光伏型 

分 类 号：TN215[电子电信—物理电子学]