Threshold distribution determination of laser-induced damage precursors in optical coatings and substrates

Helene Krol; Laurent Gallais; Bertrand Bertussi; Jean Yves Natoli; Catherine Grezes-Besset; Mireille Commandre; Claude Amra

doi:10.1117/12.585260

21 February 2005 Threshold distribution determination of laser-induced damage precursors in optical coatings and substrates

Helene Krol, Laurent Gallais, Bertrand Bertussi, Jean Yves Natoli, Catherine Grezes-Besset, Mireille Commandre, Claude Amra

Author Affiliations +

Proceedings Volume 5647, Laser-Induced Damage in Optical Materials: 2004; (2005) https://doi.org/10.1117/12.585260
Event: Boulder Damage Symposium XXXVI, 2004, Boulder, Colorado, United States

Abstract

A statistical model for the interpretation of laser damage probability curves is investigated. In a previous study, shapes and slopes of the curves were related to the spot size and to the densities of nanodefects that are responsible for damage. Each kind of precursors was characterized by its damage threshold. We improved this study when considering a Gaussian distribution of precursor thresholds. Accurate probability curves of laser induced damage (1-on-1, 5-ns single shot at 1.064-μm) are then plotted in bulk and at the surfaces of optical components and fitted with the model including Gaussian distribution of precursor thresholds. Threshold mean value, threshold standard deviation and precursor defect densities are extracted for the different kinds of observed precursors. To illustrate our investigation, we present results achieved on different substrates, which establish a better agreement between theory and experiment.

Citation Download Citation

Helene Krol, Laurent Gallais, Bertrand Bertussi, Jean Yves Natoli, Catherine Grezes-Besset, Mireille Commandre, and Claude Amra "Threshold distribution determination of laser-induced damage precursors in optical coatings and substrates", Proc. SPIE 5647, Laser-Induced Damage in Optical Materials: 2004, (21 February 2005); https://doi.org/10.1117/12.585260

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