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Proceedings Paper

Radiation-To-Light Converters For Nuclear Environments: Near-Infrared Emitters
Author(s): F. Roeske; M. D. Rotter; P. M. Calavan; S. S. Lutz
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Paper Abstract

The use of fiber optics in the diagnosis of hostile nuclear environments has brought about a pressing need for the development of suitable radiation-to-light converters. These converters must meet stringent diagnostic requirements of linearity and time response while having a wavelength of emission that is compatible with transmission over relatively long lengths of optical fibers. In this paper we describe initial investigations of two, near-infrared-emitting semiconducting materials--CdTe and GaAs. Data are presented on the wavelength of emission, linearity, time response, and relative efficiency of these semiconductors. Most data were taken at 77 K because of a dramatic increase in efficiency at this temperature. Measurements show that the intensity-vs-dose curves are linear over several decades of useful input levels. Measurements indicate that GaAs has an efficiency and time response that promise to be useful in diagnostic systems. Radiation-damage effects are briefly discussed. Finally, the future direction of these investigations and possible applications in nuclear-test diagnostic systems are reviewed.

Paper Details

Date Published: 22 January 1982
PDF: 7 pages
Proc. SPIE 0296, Fiber Optics in Adverse Environments I, (22 January 1982); doi: 10.1117/12.932444
Show Author Affiliations
F. Roeske, University of California (United States)
M. D. Rotter, University of California (United States)
P. M. Calavan, University of California (United States)
S. S. Lutz, EG&G (United States)

Published in SPIE Proceedings Vol. 0296:
Fiber Optics in Adverse Environments I
Peter B. Lyons, Editor(s)

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