基于SiPM的高灵敏度大响应范围的弱光探测系统  

Weak light detection system with high sensitivity and large response range based on SiPM

作　　者：刘刚 贾宏志[1] 涂建坤 LIU Gang;JIA Hongzhi;TU Jiankun(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Secri Optical and Electric Cable Co.,Ltd.,Shanghai 200093,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093 [2]上海赛克力光电缆有限责任公司,上海200093

出　　处：《光学仪器》2019年第4期69-73,共5页Optical Instruments

摘　　要：为了满足在极低和较高光功率范围内对光信号的探测,提出了基于硅光电倍增管(SiPM)的弱光检测系统,该系统包含自动调节偏压电路、电流?电压转换电路、小信号放大电路和滤波电路。测量不同偏压下SiPM的输出与入射光信号之间的关系,实验结果显示,偏压对SiPM的输出有很大影响,不同偏压下,SiPM的探测能力和探测范围都不相同。此外,该系统对25 pW到1.75μW的光信号都有响应,能在极低和较高光功率范围内对光信号进行连续探测。In order to detect optical signals in very low and high optical power range,a weak light detection system based on silicon photomultiplier(SiPM)is proposed.This system consists of autoadjusting bias circuit,current-voltage conversion circuit,small signal amplification circuit and filter circuit.The relationship,between the output of SiPM and the incident light signal under different bias voltage was measured.The experimental results show that the bias has a great influence on the output of SiPM,the detection ability and detection range of SiPM under different bias voltage.In addition,the system has response of the 25 pW to 1.75μW optical signals,which can achieve continuous detection of optical signals in very low and high optical power range.

关 键 词：硅光电倍增管(SiPM) 弱光探测 自动偏压控制 大范围响应 

分 类 号：TN29[电子电信—物理电子学]