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1064-nm, nanosecond laser mirror thin film damage competition
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Paper Abstract

This competition aimed to survey state-of-the-art near-IR high reflectors. The requirements of the coatings are a minimum reflection of 99.5% at 0 degrees incidence angle light at 1064-nm. The choice of coating materials, design, and deposition method were left to the participants. Laser damage testing was performed at a single testing facility using the raster scan method with a 3-ns pulse length laser system operating at 5 Hz in a multi-longitudinal mode. A double blind test assured sample and submitter anonymity. In addition to the laser damage resistance results, details of the deposition processes, cleaning method, coating materials and layer count are also shared. We found that hafnia/silica multilayer coatings deposited by e-beam are the most damage resistant under the test conditions.

Paper Details

Date Published: 16 November 2018
PDF: 8 pages
Proc. SPIE 10805, Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference, 108050Y (16 November 2018); doi: 10.1117/12.2324022
Show Author Affiliations
Raluca A. Negres, Lawrence Livermore National Lab. (United States)
Christopher J. Stolz, Lawrence Livermore National Lab. (United States)
Michael D. Thomas, Spica Technologies, Inc. (United States)
Mark Caputo, Spica Technologies, Inc. (United States)


Published in SPIE Proceedings Vol. 10805:
Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference
Christopher Wren Carr; Gregory J. Exarhos; Vitaly E. Gruzdev; Detlev Ristau; M.J. Soileau, Editor(s)

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