InGaAs single photon avalanche detector with ultralow excess noise
- Physics Department, University of California, San Diego, La Jolla, California 92093 (United States)
An InGaAs single photon avalanche detector capable of sub-Geiger mode (Photomultiplier-tube-like) operation is reported. The device achieves a stable gain at around 10{sup 6}. The gain fluctuation is greatly suppressed through a self-quenching effect, thus an equivalent excess noise factor as low as 1.001 is achieved. In the photon counting experiment, the device is operated in the nongated mode under a dc bias. Because of its unique characteristics of self-quenching and self-recovery, no external quenching circuit is needed. The device shows a single photon response of around 30 ns and a self-recovery time of about 300 ns.
- OSTI ID:
- 21016161
- Journal Information:
- Applied Physics Letters, Vol. 91, Issue 8; Other Information: DOI: 10.1063/1.2772231; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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