Characterization of scratches on fused silica optics and a way to remove them

P. Cormont; T. Corbineau; Laurent Gallais; C. Hecquet; Laurent Lamaignère; J. L. Rullier

doi:10.1117/12.976839

4 December 2012 Characterization of scratches on fused silica optics and a way to remove them

P. Cormont, T. Corbineau, Laurent Gallais, C. Hecquet, Laurent Lamaignère, J. L. Rullier

Proceedings Volume 8530, Laser-Induced Damage in Optical Materials: 2012; 853026 (2012) https://doi.org/10.1117/12.976839
Event: SPIE Laser Damage, 2012, Boulder, Colorado, United States

Abstract

Various scratches on fused silica optics after polishing have been characterized with confocal microscopy and then tested with nanosecond UV laser. Scratches are identified as a major contributor to laser damage even if they are only a few micrometers wide. We propose a process in order to remove these scratches whose depth ranges from 2 to 16 μm. We use a CO₂ laser to heat the scratched areas at high temperature which will heal fractures due to viscous flow. The characterizations were completed by laser damage tests that finally prove the effectiveness of the repair. We conclude also that this repair process proves to be fast, localized to the scratch and clean because no debris are generated.

Citation Download Citation

P. Cormont, T. Corbineau, Laurent Gallais, C. Hecquet, Laurent Lamaignère, and J. L. Rullier "Characterization of scratches on fused silica optics and a way to remove them", Proc. SPIE 8530, Laser-Induced Damage in Optical Materials: 2012, 853026 (4 December 2012); https://doi.org/10.1117/12.976839

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available