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Optical Engineering

Method to characterize superficial particulate pollution and to evaluate its impact on optical components under a high power laser
Author(s): Stéphanie Palmier; Séverine Garcia; Jean-Luc Rullier
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Paper Abstract

Pollution is known to play an important role in optical performances of high power laser components. In this study, we propose a method to characterize the particulate pollution and to evaluate its impact on the optical component lifetime. We applied it at the Ligne d'Intégration Laser (LIL), which is a prototype installation of the future Laser Mega Joule facility. By systematic examination of each particle, we obtain, in number, size, and chemical composition, an overview of pollution deposited on optical surfaces. Then we deduce the origin of the principal pollutions. After irradiation of the polluted samples, with conditions close to the maximum of the LIL operation, no laser-induced damage is observed. In contrast, irradiation induces an important cleaning.

Paper Details

Date Published: 1 August 2008
PDF: 7 pages
Opt. Eng. 47(8) 084203 doi: 10.1117/1.2969130
Published in: Optical Engineering Volume 47, Issue 8
Show Author Affiliations
Stéphanie Palmier, Institut Fresnel (France)
Séverine Garcia, Commissariat à l'Energie Atomique (France)
Jean-Luc Rullier, Commissariat à l'Energie Atomique (France)

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