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20 November 2019 Comparison of multipulse nanosecond LIDT of HR coated YAG and glass substrates at 1030 nm
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Proceedings Volume 11173, Laser-induced Damage in Optical Materials 2019; 111730S (2019) https://doi.org/10.1117/12.2536433
Event: SPIE Laser Damage, 2019, Broomfield (Boulder area), Colorado, United States
Abstract
Optical glasses, in particular fused silica and BK7, are the most common and used substrates for components manufacturing in laser technology and optics in general. Dielectric coating technologies for those materials are well known and established; both high-reflective and anti-reflective coatings prepared on such substrates demonstrated laser induced damage threshold (LIDT) exceeding tens J·cm-2 in nanosecond regime. However, LIDT became a major issue in further exploitation of crystalline materials as yttrium aluminum garnet (YAG) crystals, which often serves as a host in laser media and would be used in other components as well. One of the current challenge is the ability to transfer thin film coating technology used on glass to YAG in order to reach the same performance as in the case of fused silica or BK7 counterparts. HR dielectric coatings prepared on fused silica, BK7 and YAG substrates by reactive or ion-assisted e-beam deposition technique were tested on LIDT by s-on-1 method according to the ISO standard recommendations. Results from tests are presented and discussed in following paper.
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© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jan Vanda, Mihai-George Muresan, Pavel Cech, Martin Mydlar, Antonio Lucianetti, Jan Brajer, Tomas Mocek, Václav Škoda, and Štěpán Uxa "Comparison of multipulse nanosecond LIDT of HR coated YAG and glass substrates at 1030 nm", Proc. SPIE 11173, Laser-induced Damage in Optical Materials 2019, 111730S (20 November 2019); https://doi.org/10.1117/12.2536433
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