532-nm, nanosecond laser mirror thin film damage competition

Raluca A. Negres; Christopher J. Stolz; Gintarė Batavičiūtė; Andrius Melninkaitis

doi:10.1117/12.2566691

9 November 2020 532-nm, nanosecond laser mirror thin film damage competition

Raluca A. Negres, Christopher J. Stolz, Gintarė Batavičiūtė, Andrius Melninkaitis

Proceedings Volume 11514, Laser-induced Damage in Optical Materials 2020; 115140L (2020) https://doi.org/10.1117/12.2566691
Event: SPIE Laser Damage, 2020, Online Only

Abstract

This year’s competition aimed to survey state-of-the-art visible high reflectors in the nanosecond pulse length regime. The requirements for the coatings were a minimum reflection of 99.5% at 0 degrees incidence angle light at 532-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 scanning test protocol with a 6-ns pulse length laser system operating at 100 Hz in a single-longitudinal mode. A double blind test assured sample and submitter anonymity. The damage performance results (LIDT), sample rankings, details of the deposition processes, coating materials and substrate cleaning methods are shared. We found that hafnia/silica multilayer coatings deposited by all five deposition methods surveyed were the most damage resistant within their group under these test conditions. In addition, hafnia/alumina/silica designs deposited performed second best.

Conference Presentation

Citation Download Citation

Raluca A. Negres, Christopher J. Stolz, Gintarė Batavičiūtė, and Andrius Melninkaitis "532-nm, nanosecond laser mirror thin film damage competition", Proc. SPIE 11514, Laser-induced Damage in Optical Materials 2020, 115140L (9 November 2020); https://doi.org/10.1117/12.2566691

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