Theoretical and experimental analysis of the laser irradiation parameters influence on the LIDT of optical coatings

Laurent Gallais; Jérémie Capoulade; Jean-Yves Natoli; Mireille Commandré

doi:10.1117/12.797709

25 September 2008 Theoretical and experimental analysis of the laser irradiation parameters influence on the LIDT of optical coatings

Laurent Gallais, Jérémie Capoulade, Jean-Yves Natoli, Mireille Commandré

Author Affiliations +

Proceedings Volume 7101, Advances in Optical Thin Films III; 710117 (2008) https://doi.org/10.1117/12.797709
Event: Optical Systems Design, 2008, Glasgow, Scotland, United Kingdom

Abstract

We describe in this paper a model to link laser damage initiators properties (nature, size distribution, density) to measured Laser Induced Damage Threshold (LIDT). It is based on calculation of light absorption in nanoabsorbers and subsequent heating, coupled to laser damage statistics in order to obtain the laser damage probability as a function of laser fluence. Applications to the case of optical coatings are then presented. We study the influence of laser irradiation parameters and coatings properties on LIDT measurements. By coupling this multiscale study to our model, we show that information on the initiating defects properties and the physical damage mechanisms involved can be obtained: discrimination between different defects, estimation of densities, size and nature of defects, evolution of the defects under multiple irradiation. Implication of this approach for physical understanding and metrology applications are discussed.

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Laurent Gallais, Jérémie Capoulade, Jean-Yves Natoli, and Mireille Commandré "Theoretical and experimental analysis of the laser irradiation parameters influence on the LIDT of optical coatings", Proc. SPIE 7101, Advances in Optical Thin Films III, 710117 (25 September 2008); https://doi.org/10.1117/12.797709

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