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30 December 2008 Effect of the temporal pulse duration on the initiation of damage sites on fused silica surfaces
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Abstract
The lifetime of silica optics in high power laser facility as the Laser MégaJoule (LMJ) is typically limited by the initiation of surface damages and their subsequent growth. To prevent this problem, a mitigation technique is used: it consists in a local melting of silica by CO2 laser irradiation on the damage site. Because of the difficulty to produce efficient mitigated sites with large depth, the characterization of damage site to mitigate is very important. In this context, confocal microscopy appears to be an efficient solution to detect precisely cracks present under the damage site.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. Bertussi, P. Cormont, S. Palmier, G. Gaborit, L. Lamaignere, P. Legros, and J.-L. Rullier "Effect of the temporal pulse duration on the initiation of damage sites on fused silica surfaces", Proc. SPIE 7132, Laser-Induced Damage in Optical Materials: 2008, 71320A (30 December 2008); https://doi.org/10.1117/12.804411
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