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Proceedings Paper

Laser damage resistant pits in dielectric coatings created by femtosecond laser machining
Author(s): Justin Wolfe; Roger Qiu; Christopher Stolz; Michael Thomas; Carolyn Martinez; Arzu Ozkan
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Paper Abstract

Replacing growing damage sites with benign, laser damage resistant features in multilayer dielectric films may enable large mirrors to be operated at significantly higher fluences. Laser damage resistant features have been created in high reflecting coatings on glass substrates using femtosecond laser machining. These prototype features have been damage tested to over 40 J/cm2 (1064nm, 3ns pulselength) and have been shown not to damage upon repeated irradiation at 40J/cm2. Further work to optimize feature shape and laser machining parameters is ongoing.

Paper Details

Date Published: 31 December 2009
PDF: 8 pages
Proc. SPIE 7504, Laser-Induced Damage in Optical Materials: 2009, 750405 (31 December 2009); doi: 10.1117/12.836906
Show Author Affiliations
Justin Wolfe, Lawrence Livermore National Lab. (United States)
Roger Qiu, Lawrence Livermore National Lab. (United States)
Christopher Stolz, Lawrence Livermore National Lab. (United States)
Michael Thomas, Spica Technologies, Inc. (United States)
Carolyn Martinez, Raydiance, Inc. (United States)
Arzu Ozkan, Raydiance, Inc. (United States)

Published in SPIE Proceedings Vol. 7504:
Laser-Induced Damage in Optical Materials: 2009
Gregory J. Exarhos; Vitaly E. Gruzdev; Detlev Ristau; M. J. Soileau; Christopher J. Stolz, Editor(s)

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