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9 March 2020 Square top-hat and round top-hat laser beam shaping with multi-plane light conversion for femtosecond laser material microprocessing (Conference Presentation)
Clément Jacquard, Girolamo Mincuzzi, Marc Faucon, Aurélien Sikora, Rainer Kling, Gwenn Pallier, Nicolas Laurenchet, Pu Jian, Olivier Pinel, Guillaume Labroille
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Proceedings Volume 11266, Laser Resonators, Microresonators, and Beam Control XXII; 1126610 (2020) https://doi.org/10.1117/12.2546397
Event: SPIE LASE, 2020, San Francisco, California, United States
Abstract
Multi-Plane Light Conversion (MPLC) is an innovative shaping technique which allows theoretically lossless complex beam shapes. The free-space reflective design is particularly well suited to Ultra-Short Pulse (USP) laser-based processes challenges. We demonstrate the system high stability over long processing times thanks to a mode cleaning feature. Here we show micro-cutting and engraving tests carried out on stainless-steel and brass with a high power, industrial, USP laser having squared, and circular top-hat profile generated using MPLC technology. Thanks to the sharp edges of the profile, a sensible reduction of the taper and optimization of the overlapping is observed
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Clément Jacquard, Girolamo Mincuzzi, Marc Faucon, Aurélien Sikora, Rainer Kling, Gwenn Pallier, Nicolas Laurenchet, Pu Jian, Olivier Pinel, and Guillaume Labroille "Square top-hat and round top-hat laser beam shaping with multi-plane light conversion for femtosecond laser material microprocessing (Conference Presentation)", Proc. SPIE 11266, Laser Resonators, Microresonators, and Beam Control XXII, 1126610 (9 March 2020); https://doi.org/10.1117/12.2546397
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KEYWORDS
Beam shaping
Femtosecond phenomena
Micro cutting
Gaussian beams
Head
Laser applications
Manufacturing
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