半导体单光子探测器信号提取技术研究  

Research on signal extraction technology of semiconductor single photon detector

作　　者：甘琳巧 高家利[2] GAN Linqiao1, GAO Jiali2.(1. School of Mechanical Electronic ＆ Information Engineering, China University of Mining＆Technology, Beijing 100083, China; 2. The Engineering Training and Economical Management Experiment Center, Chongqing University of Technology, Chongqing 400054, Chin)

机构地区：[1]中国矿业大学(北京)机电与信息工程学院,北京100083 [2]重庆理工大学、工程训练与经管中心,重庆400054

出　　处：《激光杂志》2018年第5期15-17,共3页Laser Journal

基　　金：重庆市教委科学技术研究项目(No.0103121276)

摘　　要：针对半导体单光子探测器的尖峰噪声信号较大，导致有效雪崩信号难以提取的问题。设计了基于高速过零比较器和脉宽测量装置的信号甄别方案，给出了单光子探测器的实验结构设置，门控脉冲信号的产生和雪崩信号的提取由FPGA完成。实验结果表明：在0．1MHz至10MHz门控条件且制冷温度为-55℃时，探测器的最大光子探测效率（PDE）约为29．2％。当探测效率为15％时，暗计数率均低于5．6×10^-5／gate，后脉冲概率（PAP）均低于5％。The peak noise signal of semiconductor single photon detector is large, which leads to the problem that the effective avalanche signal is difficult to extract. To overcome the disadvantages, a signal discrimination technique based on high speed zero crossing comparator and pulse width measurer is designed. The setup of experimental structure for single photon detector is offered. The gated pulse signal is generated and avalanche signal is extracted by FP- GA. The experiment results show that： The maximum photon detection efficiency （PDE） of the detector is about 29.2% when the temperature is - 55 and the gating frequency is 0. 1 - 10MHz. When the PDE is 15%, the dark count rate （DCR） is less than 5.6×10^-5/gate, and after pulse probability （PAP） were lower than 5%.

关 键 词：单光子探测器 雪崩光电二极管 FPGA 脉宽测量 光子探测效率 

分 类 号：O439[机械工程—光学工程]