盖革模式雪崩光电二极管光子计数探测原理研究  

A Study on Photon Counting Detection Principle of Geiger-Mode Avalanche Photodiode

作　　者：王弟男[1] 陈长青[1] 王挺峰[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《激光与光电子学进展》2012年第12期83-88,共6页Laser & Optoelectronics Progress

基　　金：中国科学院三期创新项目(O98Y32C100)资助课题

摘　　要：分析了盖革模式雪崩光电二极管(APD)工作原理,利用采样间隔内等长时间片的方法,建立了盖革模式APD的激发概率模型。在此基础上进一步分析了光子计数探测概率以及噪声模型,根据噪声模型给出了探测虚警率;针对漫反射和镜面反射两种类型目标,分析了两种反射表面的回波信号模型,结合噪声模型,最终得到了混有噪声信号的光子计数探测概率模型,并且计算了一定阈值条件下的探测概率。The working principle of Geiger-mode avalanche photodiode （GAPD） is analyzed, and then the activating model of GAPD via splitting the sample time into even time bin is established. Based on this result, the photon counting detection probability and noise model are enlisted, and according to the noise model the probability of false alarm （PFA） is calculated. The models of signal returned from diffuse target and glint target, are analyzed, finally the detection-probability model of photon counting combined with the noise and probabiliy of detection under the threshold are obtained.

关 键 词：测量 盖革模式雪崩光电二极管 光子计数 POISSON分布 探测概率 

分 类 号：TN24[电子电信—物理电子学]