Initiation of laser-induced damage and ultimate light intensities in multilayer optical coatings with sublayered microstructure

Anastasia S. Gruzdeva; Vitali E. Gruzdev

doi:10.1117/12.334802

30 December 1998 Initiation of laser-induced damage and ultimate light intensities in multilayer optical coatings with sublayered microstructure

Anastasia S. Gruzdeva, Vitali E. Gruzdev

Author Affiliations +

Proceedings Volume 3683, Laser Optics '98: Superstrong Laser Fields and Applications; (1998) https://doi.org/10.1117/12.334802
Event: Laser Optics '98, 1998, St. Petersburg, Russian Federation

Abstract

The problem of initiating of laser-induced damage (LID) and ultimate laser fluence for homogeneous and low-absorbing optical coating is considered. It is shown that nonlinear electrodynamic processes of formation of shock electromagnetic waves is the ultimate mechanisms of LID initiating in ideal coatings because of developing of super field instability resulting from field disruptions accompanying the shock waves. Theoretical model of formation of shock electromagnetic waves is presented. In particular, two necessary conditions for shock wave formation are obtained. Computer modeling is used to investigate dynamics of shock-wave developing. Influence of coating parameters upon blow-up field instability is investigated. It is proposed a new design of multilayers optical coatings: each layer should include microlayers with similar refractive indexes and gradually varying nonlinear refraction. Such microstructure excludes sharp jumps of nonlinear optical refraction which are critical for increasing of field- instability threshold.

Citation Download Citation

Anastasia S. Gruzdeva and Vitali E. Gruzdev "Initiation of laser-induced damage and ultimate light intensities in multilayer optical coatings with sublayered microstructure", Proc. SPIE 3683, Laser Optics '98: Superstrong Laser Fields and Applications, (30 December 1998); https://doi.org/10.1117/12.334802

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