Impact of two CO_2 laser heatings for damage repairing on fused silica surface
Authors:
- 30 November 2010
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 18 (25) , 26068-26076
Abstract
CO2 laser is an interesting tool to repair defects on silica optics. We studied UV nanosecond laser-induced damage in fused silica after CO2 laser heating. The localization of damage sites and the laser damage threshold are closely related to stress area in silica induced by heating. By applying a suitable second laser heating, we managed to eliminate the debris issued from redeposited silica and to modify the stress area. As a consequence, a significant increase of laser resistance has been observed. This process offers the possibility to improve damage repairing sufficiently to extend the lifetime of the silica components.Keywords
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