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Proceedings Paper

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

Paper Details

Date Published: 30 December 2008
PDF: 8 pages
Proc. SPIE 7132, Laser-Induced Damage in Optical Materials: 2008, 71320A (30 December 2008); doi: 10.1117/12.804411
Show Author Affiliations
B. Bertussi, CEA (France)
P. Cormont, CEA-CESTA (France)
S. Palmier, CEA-CESTA (France)
G. Gaborit, CEA-CESTA (France)
L. Lamaignere, CEA-CESTA (France)
P. Legros, Univ. Bordeaux II (France)
J.-L. Rullier, CEA-CESTA (France)


Published in SPIE Proceedings Vol. 7132:
Laser-Induced Damage in Optical Materials: 2008
Gregory J. Exarhos; Detlev Ristau; M. J. Soileau; Christopher J. Stolz, Editor(s)

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