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Proceedings Paper

Importance of free surfaces for damage crater formation
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Paper Abstract

The presence of a nearby free surface means the morphology of surface damage sites is inevitably different from that of bulk damage sites. In both, the material is subject to compressive stress waves from the initial release of laser energy. However, reflection at the free surface leads to a tensile stress wave. Because material strength is much less against tension than compression, surface sites will be more extensive than bulk sites, all else being equal. We analyze the extent of damage as a function of the amount and position of energy released and compare to experimental results.

Paper Details

Date Published: 15 January 2007
PDF: 5 pages
Proc. SPIE 6403, Laser-Induced Damage in Optical Materials: 2006, 64030A (15 January 2007); doi: 10.1117/12.696343
Show Author Affiliations
M. D. Feit, Lawrence Livermore National Lab. (United States)
A. M. Rubenchik, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 6403:
Laser-Induced Damage in Optical Materials: 2006
Gregory J. Exarhos; Arthur H. Guenther; Keith L. Lewis; Detlev Ristau; M. J. Soileau; Christopher J. Stolz, Editor(s)

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