Open AccessSingle-photon Counting System Based on a 4H-SiC Avalanche Photodiode
Author(s) -
Fei Liu,
Leng Zhang,
Fangzheng Li
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/585/1/012156
Subject(s) - photon counting , avalanche photodiode , single photon avalanche diode , photodiode , signal (programming language) , optoelectronics , radiation , ultraviolet , physics , photon , apds , optics , computer science , electrical engineering , engineering , detector , programming language
Weak ultraviolet (UV) signal detection systems have broad application prospects in fields such as space science, aerospace, and military communications. 4H-SiC avalanche photodiode (APD) devices have a high internal gain and can be used in single-photon-based UV radiation counting systems when in Geiger-mode operation. The system comprises an APD drive circuit, a passive quenching circuit, a signal conditioning circuit, a counting and control circuit based on a microprogrammed control unit, and a display module, which can perform real-time monitoring of changes in weak UV radiation.