基于光子噪声研究光子探测器的探测性能  

Research on Performance of Photon Detector Based on Photon Noise

作　　者：张立帅[1] 吴平[1] ZHANG ki-shuai WU Ping(College of Science, Nanjing University of Aeronautics, Nanjing 211100, China)

机构地区：[1]南京航空航天大学理学院,江苏南京211100

出　　处：《红外》2016年第12期33-37,共5页Infrared

摘　　要：根据红外光子探测器的基本工作原理,分析了光电探测器性能的基本物理机理限制,推导了背景辐射的光子噪声限制下的比探测率。对背景限制下的比探测率随探测器截止波长、背景温度的变化进行了理论计算。对计算结果进行了理论分析,并作出了相应总结。最后提出了提高背景限制下比探测率的方法。According to the basic principle of infrared photon detectors, the basic physical mechanism limitation of photon detector performance was analyzed. The normalized detectivity which depended on the photon noise of background radiation was deduced. The change of the normalized detectivity under background limitation with the cutoff wavelength and background temperature was calculated theoretically. The calculation results were analyzed theoretically and the corresponding conclusion was given. Finally, a method for improving the normal detectivity under background limitation was proposed.

关 键 词：光子探测器 光子噪声 比探测率 

分 类 号：TN215[电子电信—物理电子学]