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12 October 2021 Investigation on beam-size effect on sub-picosecond LIDT of dielectric oxide coatings
Marek Stehlik, Frank Wagner, Janis Zideluns, Fabien Lemarchand, Julien Lumeau, Laurent Gallais
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Proceedings Volume 11910, Laser-Induced Damage in Optical Materials 2021; 119100U (2021) https://doi.org/10.1117/12.2598855
Event: SPIE Laser Damage, 2021, Online Only
Abstract
Laser-induced damage experiments on HfO2 and Nb2O5 were performed with 500 fs pulse duration at 1030 nm wavelength. Threshold fluences in dependence of beam size have been determined within the range of effective beam diameters from 40 µm up to 220 µm. The results suggest no dependence of beam size effect on effective beam diameters at least between 80 µm to 160 µm. The LIDT results indicate importance of appropriate focusing conditions and beam measurement to qualify the optics for use in lasers with large beam sizes.
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Marek Stehlik, Frank Wagner, Janis Zideluns, Fabien Lemarchand, Julien Lumeau, and Laurent Gallais "Investigation on beam-size effect on sub-picosecond LIDT of dielectric oxide coatings", Proc. SPIE 11910, Laser-Induced Damage in Optical Materials 2021, 119100U (12 October 2021); https://doi.org/10.1117/12.2598855
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KEYWORDS
Dielectrics
Laser induced damage
Laser damage threshold
Optical coatings
Oxides
Optical components
Absorption
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