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Proceedings Paper

Billion-shot flashlamp for spaceborne lasers
Author(s): Linda J. Richter; Felix Schuda; John J. Degnan
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Paper Abstract

A billion-shot flashlamp developed under a NASA contract for spaceborne laser missions is presented. Lifetime-limiting mechanisms are identified and addressed. Two energy loadings of 15 and 44 Joules were selected for the initial accelerated life testing. A fluorescence-efficiency test station was used for measuring the useful-light output degradation of the lamps. The design characteristics meeting NASA specifications are outlined. Attention is focused on the physical properties of tungsten-matrix cathodes, the chemistry of dispenser cathodes, and anode degradation. It is reported that out of the total 83 lamps tested in the program, 4 lamps reached a billion shots and one lamp is beyond 1.7 billion shots, while at 44 Joules, 4 lamps went beyond 100 million shots and one lamp reached 500 million shots.

Paper Details

Date Published: 1 April 1990
PDF: 9 pages
Proc. SPIE 1223, Solid State Lasers, (1 April 1990); doi: 10.1117/12.18406
Show Author Affiliations
Linda J. Richter, ILC Technology (United States)
Felix Schuda, ILC Technology (United States)
John J. Degnan, NASA/Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 1223:
Solid State Lasers
George Dube, Editor(s)

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