高速MPPC的光子数可分辨探测  

High-speed photon-number resolving detection with MPPC

作　　者：孙颖 梁焰[1] SUN Ying;LIANG Yan(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,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

出　　处：《光学仪器》2022年第1期22-28,共7页Optical Instruments

基　　金：国家自然科学基金(11604209);上海市科技重大专项(2019SHZDZX01)。

摘　　要：为了提高多像素光子计数器(MPPC)的高速探测并改善光子数分辨特性,采用门控抑制的MPPC,并通过自平衡及低通滤波相结合的技术手段,将MPPC的容性尖峰噪声抑制到热噪声水平,在实现光生雪崩信号的线性提取的同时快速恢复探测。实验结果表明,200 MHz门控的MPPC实现了40 MHz重复频率激光下14个光子的有效分辨,平均每脉冲光子数高达6.8。与被动抑制模式相比,200 MHz正弦门控模式下的光子数分辨效果明显得到了改善,为高速光子数可分辨探测提供了参考。In order to improve the multi-pixel photon counter(MPPC)high-speed detection and improve the photon-number to distinguish features,we use the gated suppression MPPC,and combine the self-balancing and low-pass filtering technology to suppress the capacitive-spike noise of MPPC down to the thermal noise level,realizing the linear extraction and rapid recovery detection of photogenerated avalanche signal.The experiment result shows that the 200 MHz gated MPPC achieves the effective resolution of 14 photons of the 40 MHz repetition frequency lase with the average detected photon number is up to 6.8 per pulse.Compared with the passive suppression mode,the photon number resolution in the 200 MHz sinusoidal gated mode is obviously improved,which provides a reference for high-speed photon-number resolving detection.

关 键 词：光子数可分辨探测 多像素光子计数器(MPPC) 单光子探测 

分 类 号：TN215[电子电信—物理电子学]