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Optimized laser material processing with tailored focal intensity distributions
Author(s): A. Möhl; S. Wickenhagen; F. A. Müller; S. Gräf; U. Fuchs
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Paper 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.

Paper Details

Date Published: 4 March 2019
PDF: 6 pages
Proc. SPIE 10906, Laser-based Micro- and Nanoprocessing XIII, 1090614 (4 March 2019); doi: 10.1117/12.2509403
Show Author Affiliations
A. Möhl, asphericon GmbH (Germany)
S. Wickenhagen, asphericon GmbH (Germany)
F. A. Müller, Friedrich-Schiller-Univ. Jena (Germany)
S. Gräf, Friedrich-Schiller-Univ. Jena (Germany)
U. Fuchs, asphericon GmbH (Germany)

Published in SPIE Proceedings Vol. 10906:
Laser-based Micro- and Nanoprocessing XIII
Udo Klotzbach; Akira Watanabe; Rainer Kling, Editor(s)

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