4 December 2012 Laser-induced damage resistance of UV coatings on fused silica and CaF2
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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.
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Byungil Cho, Andy Lyu, Mark Feldman, "Laser-induced damage resistance of UV coatings on fused silica and CaF2", Proc. SPIE 8530, Laser-Induced Damage in Optical Materials: 2012, 853029 (4 December 2012); doi: 10.1117/12.2007286; https://doi.org/10.1117/12.2007286
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