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Proceedings Paper

Laser-induced contamination of silica coatings in vacuum
Author(s): S. Becker; A. Pereira; P. Bouchut; F. Geffraye; C. Anglade
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Paper Abstract

Under vacuum conditions, the accumulation of low fluence laser pulses generally leads to an organic contamination of the surface irradiated. This phenomenon reduces the optical component lifetime. Experimental conditions such as laser characteristics, environment composition and structure of the coating strongly influence the contamination mechanisms. Silica being the most employed material for optical coatings, this study aims at describing the laser-induced contamination influence of silica coatings deposition techniques. E-Beam evaporated and Ion Beam Sputtered silica thin films have been exposed to several billions 600 mJ/cm2 - 532 nm laser pulses under vacuum. This paper presents the observations made on laser-induced contamination and discusses the physical mechanisms involved.

Paper Details

Date Published: 15 January 2007
PDF: 12 pages
Proc. SPIE 6403, Laser-Induced Damage in Optical Materials: 2006, 64030J (15 January 2007); doi: 10.1117/12.696042
Show Author Affiliations
S. Becker, CEA/LITEN/DTNM/LTS (France)
A. Pereira, CEA/LITEN/DTNM/LTS (France)
P. Bouchut, CEA/LITEN/DTNM/LTS (France)
F. Geffraye, CEA/LITEN/DTNM/LTS (France)
C. Anglade, CEA/LITEN/DTNM/LTS (France)


Published in SPIE Proceedings Vol. 6403:
Laser-Induced Damage in Optical Materials: 2006
Gregory J. Exarhos; Arthur H. Guenther; Keith L. Lewis; Detlev Ristau; M. J. Soileau; Christopher J. Stolz, Editor(s)

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