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

Herve Bercegol; Florian Bonneau; Philippe Bouchut; Patrick Combis; Laurent Gallais; Laurent Lamaignere; Jean-Yves Natoli; Jean-Luc Rullier; Jacques Vierne

doi:10.1117/12.472406

30 May 2003 Comparison of numerical simulations with experiment on generation of craters in silica by a laser

Herve Bercegol, Florian Bonneau, Philippe Bouchut, Patrick Combis, Laurent Gallais, Laurent Lamaignere, Jean-Yves Natoli, Jean-Luc Rullier, Jacques Vierne

Author Affiliations +

Proceedings Volume 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization; (2003) https://doi.org/10.1117/12.472406
Event: XXXIV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, 2002, Boulder, CO, United States

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.

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Herve Bercegol, Florian Bonneau, Philippe Bouchut, Patrick Combis, Laurent Gallais, Laurent Lamaignere, Jean-Yves Natoli, Jean-Luc Rullier, and Jacques Vierne "Comparison of numerical simulations with experiment on generation of craters in silica by a laser", Proc. SPIE 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization, (30 May 2003); https://doi.org/10.1117/12.472406

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