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Proceedings Paper

Simple model of laser damage initiation and conditioning in frequency conversion crystals
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Paper Abstract

Laser conditioning, i.e. pre-exposure to less than damaging laser fluence, has been shown to improve the damage resistance of KDP/DKDP frequency conversion crystals. We have extended our damage model, small absorbing precursors with a distribution of sizes, to describe various damage related properties such as damage density and effects of laser conditioning in crystals. The model assumes the rate limiting process for both initiation and conditioning depends on temperature and that separate threshold temperatures exist for either conditioning or damage initiation to occur. This is reasonable in KDP/DKDP since the melting temperature is far below the temperatures associated with plasma formation and damage events. This model is capable of accounting for some recently observed damage-conditioning behaviors.

Paper Details

Date Published: 7 February 2006
PDF: 6 pages
Proc. SPIE 5991, Laser-Induced Damage in Optical Materials: 2005, 59910W (7 February 2006); doi: 10.1117/12.638830
Show Author Affiliations
M.D. Feit, Lawrence Livermore National Lab. (United States)
A.M. Rubenchik, Lawrence Livermore National Lab. (United States)
J.B. Trenholme, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 5991:
Laser-Induced Damage in Optical Materials: 2005
Gregory J. Exarhos; Arthur H. Guenther; Keith L. Lewis; Detlev Ristau; M.J. Soileau; Christopher J. Stolz, Editor(s)

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