Detection efficiency characteristics of free-running InGaAs/InP single photon detector using passive quenching active reset IC

Zheng Fu^{1, 2}, Wang Chao^{1, 3}, Sun Zhi-Bin¹, Zhai Guang-Jie^{1, †,}

Raw count rate versus photon flux at 62.4 V bias voltage at 10 μs, 20 μs, 40 μs deadtime. The cps is for counts per second.