Growth of laser initiated damage in fused silica at 1053 nm
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.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15014742
- Report Number(s):
- UCRL-PROC-207885; TRN: US200802%%1387
- Resource Relation:
- Journal Volume: 5647; Conference: Presented at: Boulder Damage Symposium 36 2004, Boulder, CO, United States, Sep 20 - Sep 22, 2004
- Country of Publication:
- United States
- Language:
- English
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