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Proceedings Paper

Initiation of laser-induced damage and ultimate light intensities in multilayer optical coatings with sublayered microstructure
Author(s): Anastasia S. Gruzdeva; Vitali E. Gruzdev
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Paper 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.

Paper Details

Date Published: 30 December 1998
PDF: 11 pages
Proc. SPIE 3683, Laser Optics '98: Superstrong Laser Fields and Applications, (30 December 1998); doi: 10.1117/12.334802
Show Author Affiliations
Anastasia S. Gruzdeva, S.I. Vavilov State Optical Institute (Russia)
Vitali E. Gruzdev, S.I. Vavilov State Optical Institute (Russia)


Published in SPIE Proceedings Vol. 3683:
Laser Optics '98: Superstrong Laser Fields and Applications
Alexander A. Andreev, Editor(s)

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