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17 March 2023 Ultrafast vortex beams for improved energy feedthrough and low roughness surface ablation of metals
David Pallarés Aldeiturriaga, Alain Abou Khalil, Jean-Philippe Colombier, Razvan Stoian, Sedao Xxx M.D.
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Proceedings Volume 12409, Laser-based Micro- and Nanoprocessing XVII; 124090D (2023) https://doi.org/10.1117/12.2646390
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
The use of ultrafast Cylindrical Vector Vortex beams in laser-matter interaction permits to harness new ablation features from inhomogeneous distributions of polarization and beam energy distribution geometry. As a consequence, the ablation process can yield higher ablation efficiency compared to the conventional Gaussian beams. Cylindrical Vector Vortex beams prevent surface quality degradation during ablative processes. When processing stainless steel and titanium, the average surface roughness obtained by deploying Cylindrical Vector beam is up to 94% lower than the Gaussian case, and the processing efficiency is 80% higher.
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David Pallarés Aldeiturriaga, Alain Abou Khalil, Jean-Philippe Colombier, Razvan Stoian, and Sedao Xxx M.D. "Ultrafast vortex beams for improved energy feedthrough and low roughness surface ablation of metals", Proc. SPIE 12409, Laser-based Micro- and Nanoprocessing XVII, 124090D (17 March 2023); https://doi.org/10.1117/12.2646390
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KEYWORDS
Laser ablation
Ultrafast phenomena
Metals
Polarization
Laser processing
Surface roughness
Laser systems engineering
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