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21 February 2005 Growth of laser initiated damage in fused silica at 1053 nm
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The effective lifetime of a laser optic is limited by both laser-induced damage and the subsequent growth of laser initiated damage sites. We have measured the growth rate of laser-induced damage on polished fused silica surfaces in 10 torr of air at 1053 nm at 10 ns. The data shows exponential growth in the lateral size of the damage site with shot number above a threshold fluence. The size of the initial damage influences the threshold for growth. We will compare the growth rates for input and output surface damage. Possible reasons for the observed growth behavior are discussed.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mary A. Norton, Eugene E. Donohue, William G. Hollingsworth, Michael D. Feit, Alexander M. Rubenchik, and Richard P. Hackel "Growth of laser initiated damage in fused silica at 1053 nm", Proc. SPIE 5647, Laser-Induced Damage in Optical Materials: 2004, (21 February 2005);

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