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Proceedings Paper

Noise factor and gain of a near-infrared sensitive hybrid detector for use in communications
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Paper Abstract

We have measured the noise factor and the gain of a high gain, low noise, large area hybrid detector for use at near infrared wavelengths (850-900 nm). The detector consists of an image intensifier tube optically coupled to a photomultiplier tube. Pulseheight analysis techniques enabled us to observe single photoelectron and dark electron events. We acquired pulseheight distributions using a pulseheight analysis system we designed based on a spectroscopy preamplifier and a spectroscopy amplifier/gated integrator with variable integration time. From these distributions we calculated noise factor and gain for the combined detector as well as its individual components. We found that the noise factors ranged from 1.89 at 5 kY bias to 1.64 at 9 kY bias. The gain also depended on the bias voltage with a maximum of 8x106 PMT anode electrons for every electron from the intensifier's photocathode at 9 kY bias. We compared our results to those obtained using conventional techniques and found that pulseheight analysis is a valid and useful method for characterizing devices.

Paper Details

Date Published: 1 November 1990
PDF: 17 pages
Proc. SPIE 1341, Infrared Technology XVI, (1 November 1990); doi: 10.1117/12.23122
Show Author Affiliations
Michael P. Browne, Optical Sciences Ctr./Univ. of Arizona (United States)
Hans Roehrig, Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 1341:
Infrared Technology XVI
Irving J. Spiro, Editor(s)

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