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Contamination and Radiation Effects on Nonlinear Crystals for Space Laser SystemsSpace 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.
Document ID
20050210084
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Abdeldayem, Hossain A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Dowdye, Edward (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Jamison, Tracee (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Canham, John (Swales Aerospace Beltsville, MD, United States)
Jaeger, Todd (Genesis Engineering Solutions Lanham, MD, United States)
Date Acquired
September 7, 2013
Publication Date
July 11, 2005
Subject Category
Lasers And Masers
Meeting Information
Meeting: Optics and Photonics 2005
Location: San Diego, CA
Country: United States
Start Date: July 31, 2005
End Date: August 4, 2005
Distribution Limits
Public
Copyright
Public Use Permitted.

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