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Actively quenched single‐photon avalanche diode for high repetition rate time‐gated photon counting

 

作者: A. Spinelli,   L. M. Davis,   H. Dautet,  

 

期刊: Review of Scientific Instruments  (AIP Available online 1996)
卷期: Volume 67, issue 1  

页码: 55-61

 

ISSN:0034-6748

 

年代: 1996

 

DOI:10.1063/1.1146551

 

出版商: AIP

 

数据来源: AIP

 

摘要:

This paper reports an experimental characterization of the EG&G SPCM‐AQ single‐photon avalanche diode module with an active quenching bias circuit that gives a dead time of ∼35 ns for use in high count rate, fast timing applications. A quantum efficiency of ≳70% and an optimal timing jitter with a full width at one‐thousandth maximum of 1.5 ns is obtained if the light is tightly focused to a spot of <25 &mgr;m in the center of the active region, if the signal from the diode before the active quenching circuitry is used as input to the timing electronics, and if an external dead time of ∼55 ns is imposed. Under these conditions, the total probability of obtaining an afterpulse is found to be ∼2×10−3. Limitations of existing time‐correlated single‐photon counting instrumentation for count rates exceeding 106s−1are discussed. ©1996 American Institute of Physics.

 

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