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24 November 2023 Investigating the surface morphology and fracture behavior of calcium fluoride under femtosecond laser irradiation
Emma DeAngelis, Mohamed Yaseen Noor, Justin Twardowski, Conrad Kuz, Mohamed Ruwaid Rafiuddin, Enam A. Chowdhury
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Proceedings Volume PC12726, Laser-Induced Damage in Optical Materials 2023; PC127260Q (2023) https://doi.org/10.1117/12.2684484
Event: SPIE Laser Damage, 2023, Dublin/Livermore, California, United States
Abstract
We investigate the unique surface fractures of CaF2 found after single shot laser irradiation using 77 femtosecond, 1030 nm laser pulses. Optical microscopy and atomic force microscopy revealed elevated rectangular structures across laser-ablated craters. The underlying mechanism for this unique morphology may be related to anisotropic thermal conductivity and laser-induced defects. Our findings provide insights into the fundamental mechanisms of laser-induced damage in CaF2 and have implications for the design and optimization of high-power laser systems.
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Emma DeAngelis, Mohamed Yaseen Noor, Justin Twardowski, Conrad Kuz, Mohamed Ruwaid Rafiuddin, and Enam A. Chowdhury "Investigating the surface morphology and fracture behavior of calcium fluoride under femtosecond laser irradiation", Proc. SPIE PC12726, Laser-Induced Damage in Optical Materials 2023, PC127260Q (24 November 2023); https://doi.org/10.1117/12.2684484
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KEYWORDS
Calcium
Fluoride
Laser irradiation
Femtosecond phenomena
Crystals
High power lasers
Surface finishing
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