1 November 1990 Noise factor and gain of a near-infrared sensitive hybrid detector for use in communications
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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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael P. Browne, Michael P. Browne, Hans Roehrig, Hans Roehrig, } "Noise factor and gain of a near-infrared sensitive hybrid detector for use in communications", Proc. SPIE 1341, Infrared Technology XVI, (1 November 1990); doi: 10.1117/12.23122; https://doi.org/10.1117/12.23122
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