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26 November 2019 Short-pulse laser irradiation of microparticle contamination on reflective optics (Conference Presentation)
Kyle R. P. Kafka
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Proceedings Volume 11173, Laser-induced Damage in Optical Materials 2019; 111730V (2019) https://doi.org/10.1117/12.2535806
Event: SPIE Laser Damage, 2019, Broomfield (Boulder area), Colorado, United States
Abstract
This work investigates the interaction of 10-ps and 0.6-ps, 1053-nm laser pulses with ≈40 um-diam microparticles located on the surface of a multilayer dielectric mirror. Resulting morphology was examined as a function of fluence and number of pulses (1–10) for four different particle materials (one metal, one glass, and two polymers). Processes of particle ejection, particle-assisted laser-induced–damage, and damage growth are discussed, all of which occur at fluences less than half of the pristine (not contaminated) laser-induced–damage threshold of the mirror.
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Kyle R. P. Kafka "Short-pulse laser irradiation of microparticle contamination on reflective optics (Conference Presentation)", Proc. SPIE 11173, Laser-induced Damage in Optical Materials 2019, 111730V (26 November 2019); https://doi.org/10.1117/12.2535806
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KEYWORDS
Contamination
Particles
Laser induced damage
Reflectivity
Laser irradiation
Optical components
Pulsed laser operation
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