Photon detection with cooled avalanche photodiodes

Robinson, D. L.; Metscher, B. D.
November 1987
Applied Physics Letters;11/9/1987, Vol. 51 Issue 19, p1493
Academic Journal
Commercial avalanche photodiodes have been operated as single-photon detectors at an optimum operating temperature and bias voltage. These detectors were found to be 1.5–3 times more sensitive than presently available photomultiplier tubes (PMT’s). Both single-photon detection probability and detector noise increase with bias voltage; detection probabilities greater than twice that of a PMT were obtained with detector noise levels below 100 counts per second. Higher probabilities were measured at higher noise levels. The sources of noise and their dependence on temperature and bias voltage are discussed.


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