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Proceedings Paper

Comparison of aging effects in hafnia and titania thin films on the laser damage resistance of high reflection coatings for 1054 nm
Author(s): Ella S. Field; Damon E. Kletecka
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Paper Abstract

Optical coatings deposited using electron beam evaporation are subject to aging effects that change the spectral characteristics of the optical coating. The aim of this study was to determine whether aging effects can also negatively impact the laser damage resistance of an optical coating. Maintaining high resistance to laser damage is particularly important for the performance of high fluence laser systems. In 2013, we deposited different high reflection coatings for 1054 nm containing HfO2/TiO2/SiO2 layers. For this study, we re-measured the laser damage thresholds of these coatings at 3.5 ns to determine if aging effects cause the laser damage threshold to decline, and to compare whether HfO2 or TiO2 is superior in terms of long-term laser damage resistance.

Paper Details

Date Published: 13 November 2017
PDF: 10 pages
Proc. SPIE 10447, Laser-Induced Damage in Optical Materials 2017, 1044714 (13 November 2017);
Show Author Affiliations
Ella S. Field, Sandia National Labs. (United States)
Damon E. Kletecka, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 10447:
Laser-Induced Damage in Optical Materials 2017
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; MJ Soileau, Editor(s)

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