High energy ultrafast laser surface texturing with variable multi-spot patterns

Jonas Mayer; Christian Weddeling; Felix Zimmermann; Fabian Kimmich; Julian Hellstern; Max Kahmann; Christoph Tillkorn; Jonas Kleiner; Andreas Heimes; Daniel Flamm

doi:10.1117/12.2650000

17 March 2023 High energy ultrafast laser surface texturing with variable multi-spot patterns

Jonas Mayer, Christian Weddeling, Felix Zimmermann, Fabian Kimmich, Julian Hellstern, Max Kahmann, Christoph Tillkorn, Jonas Kleiner, Andreas Heimes, Daniel Flamm

Author Affiliations +

Proceedings Volume PC12414, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XII; PC1241401 (2023) https://doi.org/10.1117/12.2650000
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

We report on the efficient use of high-energy, multi-millijoule ultrafast laser sources to operate well-known low-energy micro-machining applications such as surface texturing of transparent materials. A sophisticated optical system that employs micro-lens arrays is used enabling flexible beam splitting and thus parallel processing. Here, the number of foci can be varied ranging from a few ten up to a few hundred spots. As selected examples we will present efficient glass surface texturing using 8mJ and 200W of an industry grade ultrafast laser platform. Our micro-lens-array-based optical head is generating high-quality dimples on a (100 x 100)mm2 with filling factors above 25% area in less than 15s.

Conference Presentation

Citation Download Citation

Jonas Mayer, Christian Weddeling, Felix Zimmermann, Fabian Kimmich, Julian Hellstern, Max Kahmann, Christoph Tillkorn, Jonas Kleiner, Andreas Heimes, and Daniel Flamm "High energy ultrafast laser surface texturing with variable multi-spot patterns", Proc. SPIE PC12414, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XII, PC1241401 (17 March 2023); https://doi.org/10.1117/12.2650000

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