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Proceedings Article

Contamination and radiation effects on spaceflight laser systems

[+] Author Affiliations
Hossin A. Abdeldayem, Edward Dowdye

NASA Goddard Space Flight Ctr.

John Canham

Swales Aerospace, Inc.

Todd Jaeger

Genesis Engineering Solutions

Proc. SPIE 5897, Photonics for Space Environments X, 589705 (August 30, 2005); doi:10.1117/12.622345
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From Conference Volume 5897

  • Photonics for Space Environments X
  • Edward W. Taylor
  • San Diego, California, USA | July 31, 2005

abstract

Space Lasers are vital tools for NASA's space missions and military applications. Although, lasers are highly reliable on the ground, several past space laser missions proved to be short-lived and unreliable. In this communication, we are shedding more light on the contamination and radiation issues, which are the most common causes for optical damages and laser failures in space. At first, we will present results based on the study of liquids and subsequently correlate these results to the particulates of the laser system environment. We present a model explaining how the laser beam traps contaminants against the optical surfaces and cause optical damages and the role of gravity in the process. We also report the results of the second harmonic generation efficiency for nonlinear optical crystals irradiated with high-energy beams of protons. In addition, we are proposing to employ the technique of adsorption to minimize the presence of adsorbing molecules present in the laser compartment.

© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Hossin A. Abdeldayem ; Edward Dowdye ; John Canham and Todd Jaeger
"Contamination and radiation effects on spaceflight laser systems", Proc. SPIE 5897, Photonics for Space Environments X, 589705 (August 30, 2005); doi:10.1117/12.622345; http://dx.doi.org/10.1117/12.622345


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