A single-photon detector without cooler

Bing Zhou; Fu-yu Huang; Dong-sheng Wu; Jie Liu

doi:10.1117/12.999979

30 November 2012 A single-photon detector without cooler

Bing Zhou, Fu-yu Huang, Dong-sheng Wu, Jie Liu

Proceedings Volume 8561, Advanced Sensor Systems and Applications V; 85611E (2012) https://doi.org/10.1117/12.999979
Event: Photonics Asia, 2012, Beijing, China

Abstract

One type of single-photon detector that without cooler, which is mainly consisted by noise voltage control circuit and precise pulse width detection circuit, is presented. The noise voltage control circuit is using the characteristic the noise rapid increase in avalanche voltage. The detector signal after forward and video amplifier is measured. When noise voltage exceed a certain range, the bias voltage would be decreased; when noise signal minished, the bias voltage would be increased. So the bias voltage of APD is dynamically fixed by certain voltage. When the avalanche voltage changes with the temperature, the noise character nearby avalanche is resemble. So the bias voltage could be stabilized based on noise character. The detector’s output SNR would descend greatly if there was no cooler, and the phonon avalanche signal would not measured efficiently by the tradition extent detection. Considering the difference of time width between photon avalanche signal and noise signal, the precise pulse width detection method is adopted. It can filter the narrow noise signal and only detect photon avalanche signal which has larger pulse width efficiently.

Citation Download Citation

Bing Zhou, Fu-yu Huang, Dong-sheng Wu, and Jie Liu "A single-photon detector without cooler", Proc. SPIE 8561, Advanced Sensor Systems and Applications V, 85611E (30 November 2012); https://doi.org/10.1117/12.999979

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