碲镉汞模拟探测器量子效率定标方法

发布时间：2018-04-04 13:27

本文选题：遥感　切入点：参量下转换　出处：《光子学报》2017年11期

【摘要】：为测量红外模拟探测器量子效率,搭建了基于参量下转换效应的测量系统.利用光学参量振荡器调谐输出的2 576.5nm波长连续激光束作为泵浦源、ZnGeP2晶体作为非线性晶体,获取了3.42μm和10.4μm的相关光子对.实验中通过将采集到的两个通道的光电流/电压信号转换为等效光子计数,并利用两光路平衡测量的方法对每个模式的平均光子计数进行校正,实现了碲镉汞红外模拟探测器在10.4μm处的绝对功率响应度定标,得到了相对合成不确定度优于4.53%的定标结果.
[Abstract]:In order to measure quantum efficiency of infrared analog detector, a measurement system based on parametric downconversion effect is built.The coherent photonic pairs of 3.42 渭 m and 10.4 渭 m have been obtained by using the 2 576.5nm wavelength CW laser beam as the pump source and the ZnGeP2 crystal as the nonlinear crystal.In the experiment, the photocurrent / voltage signals of the two channels are converted into equivalent photon counting, and the average photon counting of each mode is corrected by using the two-path balance measurement method.The absolute power responsivity calibration of HgCdTe infrared analog detector at 10.4 渭 m has been realized. The calibration results of relative synthesis uncertainty are better than 4.53%.
【作者单位】：中国科学院通用光学定标与表征技术重点实验室;中国科学技术大学;
【基金】：国家高技术研究发展计划(No.2015AA123702) 中国科学院创新基金项目资助~~
【分类号】：TP73

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