Open AccessWeak avalanche discrimination for gated-mode single-photon avalanche photodiodes
Author(s) -
Seok-Beom Cho,
Seung Beom Kang
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.018510
Subject(s) - avalanche photodiode , single photon avalanche diode , optics , photon counting , gating , avalanche diode , pulse (music) , photon , physics , signal (programming language) , photodiode , photodetector , optoelectronics , detector , computer science , physiology , breakdown voltage , quantum mechanics , voltage , biology , programming language
The after-pulsing effect is a common problem that needs to be overcome for high-speed single-photon detection based on gated-mode single-photon avalanche photodiodes (SPADs). This paper presents a simple and practical method for suppression of the after-pulsing probability using an auxiliary signal to discriminate quite weak avalanches. The detection efficiency and after-pulse probability of an InGaAs/InP SPAD are investigated with a 10 MHz gating for conventional and proposed methods, and a sharp decrease of after-pulse probability is demonstrated with the application of the proposed method. At a gating frequency of 100 MHz, a detection efficiency of 10.4% is achieved with an after-pulse probability of 5.6% without dead time.