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Proceedings Paper

Comparison of numerical simulations with experiment on generation of craters in silica by a laser
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Paper Abstract

The validation of numerical simulations of laser induced damage of fused silica requires detailed knowledge of the different parameters involved in the interaction. To approach the problem, we have performed simulations of laser energy deposition in spherical metallic defects and the surrounding fused silica. Our code DELPOR takes into account various laser/defect induced absorption mechanisms of SiO2, such as radiative ionization, avalanche and multiphotonic ionization. We have studied crater formation produced by the absorber explosion with a 2-D Lagrange-Euler code taking into account crack formation and propagation in the brittle material. To validate our simulations, we have made and tested samples of ultra-pure silica thin film, containing gold nanoparticles of diameter 0.6 μm. The fused silica coating could have three different thickness. We compare experiment and simulations for two laser irradiations at wavelengths 0.351 and 1.053 μm.

Paper Details

Date Published: 30 May 2003
PDF: 12 pages
Proc. SPIE 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization, (30 May 2003); doi: 10.1117/12.472406
Show Author Affiliations
Herve Bercegol, CEA-CESTA (France)
Florian Bonneau, CEA-DAM Ile de France (France)
Philippe Bouchut, CEA-LETI (France)
Patrick Combis, CEA-DAM Ile de France (France)
Laurent Gallais, Institut Fresnel/ENSPM (France)
Laurent Lamaignere, CEA-CESTA (France)
Jean-Yves Natoli, Institut Fresnel/ENSPM (France)
Jean-Luc Rullier, CEA-DAM Ile de France (France)
Jacques Vierne, CEA-DAM Ile de France (France)

Published in SPIE Proceedings Vol. 4932:
Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization
Gregory J. Exarhos; Adolf Giesen; Arthur H. Guenther; Norbert Kaiser; Keith L. Lewis; Horst Weber; M. J. Soileau; Christopher J. Stolz, Editor(s)

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