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Proceedings Paper

Change in FWHM of AlGaAs LEDs subjected to mixed neutron and gamma radiation
Author(s): Joel M. Hatch
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Paper Abstract

AlGaAs light emitting diodes were irradiated in a mixed neutron/gamma environment produced by a research reactor operating at steady state power levels. Changes in the DUTs power and spectral output were measured following an annealing period of 24-30 hours. The LED's total output power decreased with increasing fluence, and the device's spectral output/full width half maximum peaks shifted. Initially, the LED radiated light at two output peak wavelengths of 820 and 890 nm. Following a cumulative irradiation of approximately equals 1016 n/cm2 (GaAs), the second radiation peak was reduced to less than 0.5% of the DUT's total output power, and the lower peak shifted to a longer wavelength of 833 nm.

Paper Details

Date Published: 28 September 1994
PDF: 11 pages
Proc. SPIE 2290, Fiber Optic Materials and Components, (28 September 1994); doi: 10.1117/12.187426
Show Author Affiliations
Joel M. Hatch, Science & Engineering Associates, Inc. (United States)


Published in SPIE Proceedings Vol. 2290:
Fiber Optic Materials and Components
Hakan H. Yuce; Dilip K. Paul; Roger A. Greenwell, Editor(s)

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