Optimized laser material processing with tailored focal intensity distributions

A. Möhl; S. Wickenhagen; F. A. Müller; S. Gräf; U. Fuchs

doi:10.1117/12.2509403

4 March 2019 Optimized laser material processing with tailored focal intensity distributions

A. Möhl, S. Wickenhagen, F. A. Müller, S. Gräf, U. Fuchs

Proceedings Volume 10906, Laser-based Micro- and Nanoprocessing XIII; 1090614 (2019) https://doi.org/10.1117/12.2509403
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

Gaussian intensity profiles are widely used in the field of laser material processing. Nevertheless, there are applications, where the inhomogeneous beam profile is not acceptable. We show that refractive beam shaping systems provide very good results for generating tailored focal intensity distributions, e.g. top-hat or doughnut shaped profiles. Even though using just one beam shaping system the width of the profiles is scalable. The device is suitable for working with a scanner and F-Theta lens as commonly used for material processing. Results of material processing of steel are compared for different focal intensity distributions.

Conference Presentation

Citation Download Citation

A. Möhl, S. Wickenhagen, F. A. Müller, S. Gräf, and U. Fuchs "Optimized laser material processing with tailored focal intensity distributions", Proc. SPIE 10906, Laser-based Micro- and Nanoprocessing XIII, 1090614 (4 March 2019); https://doi.org/10.1117/12.2509403

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