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Proceedings Paper

Noise and photoconductivity in single quantum well infrared photodetectors
Author(s): Maxim Ershov; Alexander N. Korotkov
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Paper Abstract

The noise spectral density off current fluctuations in single quantum well IR photodetectors is calculated using Langevin approach. Fluctuations of the incident photon flux ar taken into account. The dark current noise spectral density has a Lorentzian shape with characteristics frequency equal to inverse time of the QW recharging. This effect is due to the modulation of the injection current by the charge in the QW. The noise gain and the photocurrent gain are expressed in terms of basic transport parameters. The ratio of the noise gain to photocurrent gain is different from unity in general case.

Paper Details

Date Published: 8 April 1998
PDF: 6 pages
Proc. SPIE 3287, Photodetectors: Materials and Devices III, (8 April 1998); doi: 10.1117/12.304479
Show Author Affiliations
Maxim Ershov, Univ. of Aizu (United States)
Alexander N. Korotkov, Moscow State Univ. (United States)

Published in SPIE Proceedings Vol. 3287:
Photodetectors: Materials and Devices III
Gail J. Brown, Editor(s)

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