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Ultraviolet laser-induced damage on fused silica substrate and its sol-gel coating |
Optics Letters, Vol. 37, Issue 12, pp. 2364-2366 (2012)
http://dx.doi.org/10.1364/OL.37.002364
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Abstract
A comparative study of the laser-induced damage thresholds (LIDTs) of fused silica substrates and their sol-gel silica coatings was carried out with 355 nm laser irradiation. Chemical etching and superpolishing were employed in different ways to improve the substrate. The laser damage tests showed that the coated substrate was no more susceptible to laser damage than the bare substrate, showing that the substrate quality was the dominant factor limiting the LIDT for UV irradiation. In addition, it was found that high value of substrate microroughness was more harmful to the LIDT of the coated than the bare substrate, and that a proper combination of etching and superpolishing can optimize the LIDT.
© 2012 Optical Society of America
OCIS Codes
(140.3330) Lasers and laser optics : Laser damage
(310.1210) Thin films : Antireflection coatings
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: March 26, 2012
Revised Manuscript: May 11, 2012
Manuscript Accepted: May 11, 2012
Published: June 12, 2012
Citation
Xiaoguang Li, Mark Gross, Katie Green, Bob Oreb, and Jun Shen, "Ultraviolet laser-induced damage on fused silica substrate and its sol-gel coating," Opt. Lett. 37, 2364-2366 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-12-2364
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