Detection of individual 0.4–28 &mgr;m wavelength photons via impurity‐impact ionization in a solid‐state photomultiplier
作者:
M. D. Petroff,
M. G. Stapelbroek,
W. A. Kleinhans,
期刊:
Applied Physics Letters
(AIP Available online 1987)
卷期:
Volume 51,
issue 6
页码: 406-408
ISSN:0003-6951
年代: 1987
DOI:10.1063/1.98404
出版商: AIP
数据来源: AIP
摘要:
A solid‐state device capable of continuous detection of individual photons in the wavelength range from 0.4 to 28 &mgr;m is described. Operated with a dc applied bias, its response to the absorption of incident photons consists of submicrosecond rise time pulses with amplitudes well above the electronic readout noise level. A counting quantum efficiency of over 30% has been demonstrated at a wavelength of 20 &mgr;m, and over 50% was observed in the visible‐light region. Optimum photon‐counting performance occurs for temperatures between 6 and 10 K and for count rates less than 1010counts/s per cm2of detector area. The operating principle of the device is outlined and its performance characteristics as a photon detector are presented.
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