Calculated and thermally measured laser damage in metallic thin films as a function of pulse duration

Laurent Gallais; Claude Amra; Jean-Yves Natoli

doi:10.1117/12.472394

30 May 2003 Calculated and thermally measured laser damage in metallic thin films as a function of pulse duration

Laurent Gallais, Claude Amra, Jean-Yves Natoli

Proceedings Volume 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization; (2003) https://doi.org/10.1117/12.472394
Event: XXXIV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, 2002, Boulder, CO, United States

Abstract

Laser damage in metallic thin films is investigated in materials such as Gold and Nickel with different pulse durations from 1s to 10ns. In these materials, damage phenomena can be clearly investigated through thermal effects. Then, the heat equation is solved for monolayers which offers the prediction of transient temperature in each case. These results of calculations are compared to LIDT measurements at 1.O6μm and associated to morphology studies made by Atomic Force Microscope. Different mechanisms are highlighted, depending on the layer thickness. The experimental and theoretical results are found to agree well in the range of milliseconds to nanoseconds. This study offers a significant understanding for the design of metal-dielectric multilayers, such as broadband light absorbers, filters or mirrors.

Citation Download Citation

Laurent Gallais, Claude Amra, and Jean-Yves Natoli "Calculated and thermally measured laser damage in metallic thin films as a function of pulse duration", 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/10.1117/12.472394

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