Importance of free surfaces for damage crater formation

M. D. Feit; A. M. Rubenchik

doi:10.1117/12.696343

15 January 2007 Importance of free surfaces for damage crater formation

M. D. Feit, A. M. Rubenchik

Proceedings Volume 6403, Laser-Induced Damage in Optical Materials: 2006; 64030A (2007) https://doi.org/10.1117/12.696343
Event: Boulder Damage Symposium XXXVIII: Annual Symposium on Optical Materials for High Power Lasers, 2006, Boulder, Colorado, United States

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.

Citation Download Citation

M. D. Feit and A. M. Rubenchik "Importance of free surfaces for damage crater formation", Proc. SPIE 6403, Laser-Induced Damage in Optical Materials: 2006, 64030A (15 January 2007); https://doi.org/10.1117/12.696343

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