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Proceedings Paper

Laser-induced damage resistance of UV coatings on fused silica and CaF2
Author(s): Byungil Cho; Andy Lyu; Mark Feldman
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Paper Abstract

The laser damage resistance (LDR) is a measure of the laser fluence that a coating can withstand without damaging when exposed to a large number of pulses. The LDR of UV coatings has been studied at 266 nm on two common substrate materials. Significantly higher values for the LDR have been measured for the same coating deposited on CaF2 substrate compared to fused silica substrates. Various parameters such as the surface roughness, the absorption and the subsurface damage of these quite different materials were measured in an effort to explain the performance difference. The laser damage morphologies of the coatings were also studied.

Paper Details

Date Published: 4 December 2012
PDF: 10 pages
Proc. SPIE 8530, Laser-Induced Damage in Optical Materials: 2012, 853029 (4 December 2012); doi: 10.1117/12.2007286
Show Author Affiliations
Byungil Cho, Newport Corp. (United States)
Andy Lyu, Newport Corp. (United States)
Mark Feldman, Spectra-Physics®, a Div. of Newport Corp. (United States)

Published in SPIE Proceedings Vol. 8530:
Laser-Induced Damage in Optical Materials: 2012
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; M J Soileau, Editor(s)

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