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Proceedings Paper

Process for repairing large scratches on fused silica optics
Author(s): Philippe Cormont; Antoine Bourgeade; Sandy Cavaro; Thomas Doualle; Gael Gaborit; Laurent Gallais; Jean-Luc Rullier; Daniel Taroux
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Paper Abstract

Scratches at the surface of fused silica optics can be detrimental for the performance of optical systems because they initiate damage on the optic but also they perturb the amplitude or phase of the transmitted laser light. Removing scratches by conventional polishing techniques can be time consuming as it is an iterative and long process, especially when hours of polishing time are required to obtain very high surface accuracy. So we have investigated ways to remove them with local laser processing. The silica is then heated at temperature higher than the softening point to heal the cracks.

Paper Details

Date Published: 11 October 2015
PDF: 9 pages
Proc. SPIE 9633, Optifab 2015, 96330A (11 October 2015); doi: 10.1117/12.2195698
Show Author Affiliations
Philippe Cormont, CEA CESTA (France)
Antoine Bourgeade, CEA CESTA (France)
Sandy Cavaro, CEA CESTA (France)
Thomas Doualle, Aix-Marsaille Univ., CNRS, Institut Fresnel (France)
Gael Gaborit, CEA CESTA (France)
Laurent Gallais, Aix-Marsaille Univ., CNRS, Institut Fresnel (France)
Jean-Luc Rullier, CEA CESTA (France)
Daniel Taroux, CEA CESTA (France)

Published in SPIE Proceedings Vol. 9633:
Optifab 2015
Julie L. Bentley; Sebastian Stoebenau, Editor(s)

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