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Proceedings Paper

Theory of laser-induced damage to optical coatings: inclusion-initiated thermal explosion mechanism
Author(s): M. F. Koldunov; Alexander A. Manenkov; I. L. Pocotilo
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Paper Abstract

The theory of laser induced damage to an optical single-layer dielectric film (coating) initiated by an absorbing inclusion is presented. The damage model based on the photoionization mechanism due to thermal radiation of the laser heated inclusion is analyzed. Dependences of the laser induced damage threshold upon coating/substrate band-gap ratio and absorption cross-section ratio, and upon coating thickness are derived from a solution of heat and electron diffusion equations. The coating thickness dependence predicted is compared with experimental data.

Paper Details

Date Published: 28 July 1994
PDF: 19 pages
Proc. SPIE 2114, Laser-Induced Damage in Optical Materials: 1993, (28 July 1994); doi: 10.1117/12.180892
Show Author Affiliations
M. F. Koldunov, General Physics Institute (Russia)
Alexander A. Manenkov, General Physics Institute (Russia)
I. L. Pocotilo, General Physics Institute (Russia)

Published in SPIE Proceedings Vol. 2114:
Laser-Induced Damage in Optical Materials: 1993
Harold E. Bennett; Lloyd L. Chase; Arthur H. Guenther; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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