Effects of Gamma Radiation on Gallium-Arsenide Lasers.

Abstract

The effect of gamma radiation from a Co60 source on the performance of two types of aluminum gallium arsenide injection lasers was investigated. Both types of lasers were designed to operate in the continuous wave mode at room temperature. Measurements were conducted to determine radiation induced changes in the threshold current, power output, efficiency, and spectral and intensity distributions. Damage factors were calculated by the constant voltage and constant current methods. Type C30127 (RCA) exhibited rapid degradation. A dosage of 10000 Rad(Si) reduced the output power by a factor of two. Threshold current increased, efficiency decreased, and the intensity distribution changed drastically. The damage factor at constant voltage was calculated. The performance of LCW-10 (Laser Diode Laboratories, Inc.) improved to a dosage of meg a rad (Si) before the onset of degradation.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1977
Accession Number
ADA048361

Entities

People

  • Harro Ackermann

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Detectors
  • Emission
  • Far Field
  • Gallium Arsenides
  • Gamma Rays
  • Laser Diodes
  • Measurement
  • Nuclear Radiation
  • Power Supplies
  • Quantum Efficiency
  • Radiation
  • Refractive Index
  • Semiconductors
  • Solid State Electronics
  • Space Charge
  • United States

Fields of Study

  • Engineering
  • Physics

Readers

  • Nuclear and Radiation Engineering.
  • Optical Physics and Photonics.
  • Semiconductor Device Technology

Technology Areas

  • Directed Energy
  • Microelectronics