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Laser-optics qualification for space applications

Riede, Wolfgang and Wernham, Denny (2009) Laser-optics qualification for space applications. SPIE. [Other]

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Accessing space with high-power laser systems is not a straightforward task as the space environment entails various risks [1] for optical surfaces and even bulk materials. High-power laser systems can respond very sensitively on absorption increase on its manifold of optical surfaces or in the bulk of transmissive optics, on misalignment of the optical axis, or coating delamination or destruction. These deleterious effects can be conveyed by a simultaneous action of outgassing contaminants and (UV) laser radiation leading to absorbing deposits on optical surfaces, by high energy solar or cosmic radiation generating color centers in the bulk of materials, by vibration-sensitive mounting of optics leading to misalignment during launch, by high-fluence exposure exceeding vacuum laser damage thresholds (coating destruction) or mismatch of thermal expansion coefficients (coating delamination), to mention just the most important risks. Extensive tests are currently supported by ESA / ESTEC at various labs in Europe to find ways to dispose of or mitigate the risks mentioned above.

Document Type:Other
Title:Laser-optics qualification for space applications
AuthorsInstitution or Email of Authors
Riede, WolfgangWolfgang.Riede@dlr.de
Wernham, DennyDenny.Wernham@esa.int
Date:28 December 2009
Journal or Publication Title:SPIE Newsroom
Refereed publication:No
SPIE, --Newsroom@spie.org
Series Name:SPIE Newsroom
Keywords:Laser damage testing, space qualification, laser-induced contamination, air-vacuum effect, frequency conversion.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Wolfgang Riede
Deposited On:04 Jan 2010 10:52
Last Modified:07 Feb 2013 19:35

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