Radiation-To-Light Converters For Nuclear Environments: Near-Infrared Emitters

F. Roeske; M. D. Rotter; P. M. Calavan; S. S. Lutz

doi:10.1117/12.932444

22 January 1982 Radiation-To-Light Converters For Nuclear Environments: Near-Infrared Emitters

F. Roeske, M. D. Rotter, P. M. Calavan, S. S. Lutz

Proceedings Volume 0296, Fiber Optics in Adverse Environments I; (1982) https://doi.org/10.1117/12.932444
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

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.

Citation Download Citation

F. Roeske, M. D. Rotter, P. M. Calavan, and S. S. Lutz "Radiation-To-Light Converters For Nuclear Environments: Near-Infrared Emitters", Proc. SPIE 0296, Fiber Optics in Adverse Environments I, (22 January 1982); https://doi.org/10.1117/12.932444

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