红外探测器探测度D（T，f）探讨  

A Comment on IR Detector Detectivity D(T, f)

作　　者：赵举廉[1] 杨俊霞[1] 褚云汉[1] 顾里平[1] 赵进豪[1] 

机构地区：[1]昆明物理研究所

出　　处：《红外技术》1995年第6期1-3,7,共4页Infrared Technology

摘　　要：本文导出了红外探测器探测度Ｄ＊（Ｔ，ｆ，ｌ）与光谱匹配因数α（ωλＴ，ｒλ）之间的关系，对Ｄ＊（５００Ｋ，ｆ，ｌ）值进行了探讨。由于实际应用中目标温度差别很大，Ｄ＊（５００Ｋ，ｆ，ｌ）值与实际探测结果并不一致。笔者导出了一个重要的关系式：Ｄ＊（Ｔ，ｆ，ｌ）＝Ｋ（Ｔ，ｒλ）Ｄ＊（５００Ｋ，ｆ，ｌ）。给出了ＨｇＣｄＴｅ、Ｉｎｓｂ和ＰｂＳ红外探测器的一种Ｋ—Ｔ曲线。提出了迅速简便获得Ｄ＊（Ｔ，ｆ，ｌ）值的修正系数法，从而得到与实际应用结果相一致的Ｄ＊（Ｔ，ｆ，ｌ）值。The relation between detectivity D*(T, f) of IR detector and spectral matching factor a(ωλT,rλ) has been setup in this paper. The value of D*(500, f, 1) is inconsistent with the detection results, owing to the big difference in temperature of the targets. An important expression:D*(T,f, 1) =K(T, rλ) D*(500,f, 1) has ho derived and K-T curves for HgCdTe, InSb and PbS detectors are given. A correction coefficient method has been developed for easily obtaining the D*(T,f, 1) values Which is consistent with the practical detection.

关 键 词：红外探测器 探测度 光谱匹配因数 修正系数法 

分 类 号：TN215[电子电信—物理电子学]