Effect of the temporal pulse duration on the initiation of damage sites on fused silica surfaces

B. Bertussi; P. Cormont; S. Palmier; G. Gaborit; L. Lamaignere; P. Legros; J.-L. Rullier

doi:10.1117/12.804411

30 December 2008 Effect of the temporal pulse duration on the initiation of damage sites on fused silica surfaces

B. Bertussi, P. Cormont, S. Palmier, G. Gaborit, L. Lamaignere, P. Legros, J.-L. Rullier

Author Affiliations +

Proceedings Volume 7132, Laser-Induced Damage in Optical Materials: 2008; 71320A (2008) https://doi.org/10.1117/12.804411
Event: Boulder Damage Symposium XL Annual Symposium on Optical Materials for High Power Lasers, 2008, Boulder, Colorado, United States

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.

Citation Download Citation

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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