Accession Number : AD0871753

Title :   An Erbium Laser Target Illuminator Pumped by Gallium Arsenide Light Emitting Diodes.

Descriptive Note : Technical rept.,

Corporate Author : ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL AL PHY SICAL SCIENCES DIRECTORATE

Personal Author(s) : Wittmann, Horst R.

Report Date : 18 MAY 1970

Pagination or Media Count : 16

Abstract : The design of a 1 megawatt Q-switched erbium laser range-finding or target illumination system pumped by an array of electroluminescent, amphoterically doped gallium arsenide diodes is outlined. As the absorption spectrum of the laser rod is matched with the emission spectrum of electroluminescent diodes, a conversion efficiency of electrical into lasing energy of 1 percent is achieved. No liquid or other active cooling system is required for repetition rates below 30 pulses per second. The weight of the system is estimated to be below 2.5 kilograms. (Author)

Descriptors :   *RANGE FINDING), (*LASERS, TARGET POSITION INDICATORS, ERBIUM, GALLIUM ARSENIDES, PHOTODIODES, ABSORPTION SPECTRA.

Subject Categories : Lasers and Masers
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE