Dr. Wenyang Sheng Profile

Dr. Wenyang Sheng

at 38th Research Institute of CETC

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Proceedings Article | 17 April 2020 Paper

Absolute calibration of the PMT detector based on parametric-down-conversion

Wenyang Sheng, Maopeng Xia, Xiaobing Zheng

Proceedings Volume 11455, 114557Y (2020) https://doi.org/10.1117/12.2565374

KEYWORDS: Calibration, Sensors, Quantum efficiency, Single photon detectors, Photon counting

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Spontaneous parameter down-conversion is exploited as a tool for absolute quantum efficiency calibration of photon detectors working in the photon-counting regime. This paper innovatively proposes a quantum efficiency correction model by analyzing the effects of after-pulse, double channel bandwidth matching and other factors on double channel coincidence counting. This experimental system shows the minimum deviation of quantum efficiency is 0.17% and detector quantum efficiency calibration accuracy better than 1.23%. The development of this new radiation calibration technology will play an important role in the future space radiation reference source and high-precision satellite radiation calibration, quantum communication and low-light level fields, environmental monitoring and climate research programs.

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