Infrared single photon detection system based on parallel avalanche photodiode array

被引:0
作者
Li Z. [1 ]
Luo C. [1 ]
Lu T.-T. [1 ]
Geng X. [1 ]
Xu J. [1 ]
Yi B. [1 ]
机构
[1] Department of Physics, University of Science and Technology of China, Hefei
来源
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2016年 / 24卷
关键词
After-pulse effect; Avalanche photodiode; Infrared single-photon detector; Parallel array;
D O I
10.3788/OPE.20162413.0006
中图分类号
学科分类号
摘要
To overcome the after-pulse effect of InGaAs/InP APD single-photon detector, reduce the dead time of APD devices, and improve the operating frequency and detection efficiency of infrared single-photon detector, a parallel APD array was adopted to convert the single-photon signal into the avalanche signal. Through a DC bias voltage circuit, the parallel APD array can operate in the Geiger Mode. By virtue of the high-speed pulse gating sequence signal circuit and multi-channel optical switch, the parallel APD array was able to achieve the sequential switching function. The avalanche signal output from the parallel APD array, after being processed by low-pass filtering and broadband of signal detection circuit, was converted into digital signal through the signal-simulation digital conversion circuit; and then through discrimination detection and counting by the signal processing circuit, digital signals of different types can be output. The results show that when the pulse gating signal frequency is 1.6 GHz, the repetition frequency of the infrared single-photon detection system with parallel APD array of 8 channels is 1000 MHz, with a dark count rate of 5.92×10-5 and a detection efficiency of 10.0%. The infrared single-photon detection system with parallel APD array can dramatically reduce the dead time, and effectively improve the operating frequency and repetition count rate of single-photon detection. © 2016, Science Press. All right reserved.
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页码:6 / 11
页数:5
相关论文
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