Afterpulsing of single-photon avalanche photodetectors

Abstract

By making use of the interleaved pulse measurement, the dependence of the afterpulsing effect on temperature was investigated. As such, the primary dark current and detrap time as functions of temperature were obtained by fitting the experimental data. This paper reveals the impact of afterpulsing effect on the dark count rate, and an optimum operation temperature for low dark count was observed for InGaAs/InP APD photon counters.