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Proceedings Paper

Micro-gravity and contamination roles in spaceflight laser failures
Author(s): Hossin A. Abdeldayem; Edward Dowdye; John Canham; Shahin Ghazanshahi
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Paper Abstract

NASA is striving to develop a scientific understanding of the universe, the Earth-Sun System and the Earth's response to natural or human-induced changes. Space lasers are vital tools for NASA's missions to advance our understanding of space research and improving our prediction capability for climate, and natural hazards. Unfortunately, several past spaceflight missions that utilized lasers proved to be short-lived and unreliable. In this paper, we are shedding more light on the contamination issue in the absence of gravity. We performed a set of relevant experiments on liquids and subsequently correlated the results to the spaceflight laser environment. We found that in the absence of gravity the contamination plays a major role in spaceflight laser failures. We also proposed a methodology using the adsorption mechanism to be adopted in future spaceflight lasers to minimize the presence of contaminants in the laser compartment.

Paper Details

Date Published: 20 September 2005
PDF: 13 pages
Proc. SPIE 5912, Operational Characteristics and Crystal Growth of Nonlinear Optical Materials II, 59120H (20 September 2005); doi: 10.1117/12.615368
Show Author Affiliations
Hossin A. Abdeldayem, NASA-Goddard Space Flight Ctr. (United States)
Edward Dowdye, NASA-Goddard Space Flight Ctr. (United States)
John Canham, Swales Aerospace, Inc. (United States)
Shahin Ghazanshahi, California State Univ. (United States)

Published in SPIE Proceedings Vol. 5912:
Operational Characteristics and Crystal Growth of Nonlinear Optical Materials II
Ravindra B. Lal; Donald O. Frazier, Editor(s)

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