In:
Photonics, MDPI AG, Vol. 10, No. 4 ( 2023-04-06), p. 413-
Abstract:
We report on an optical setup to generate multi-Bessel beam profiles combining a refractive axicon and a spatial light modulator. Based on their particular beam profile, Bessel beams offer advantageous properties for micro drilling processes and internal volume processing, especially for transparent materials. In addition, the laser power of industrial, ultrashort pulsed lasers has increased significantly over the last few years, offering the possibility for highly efficient processes using multi-spot profiles. Our optical concept combines the dynamic possibilities of beam splitting using a spatial light modulator with the benefits of Bessel beams, which facilitates multi-Bessel beam processing. Beside the simulation and experimental evaluation of the generated multi-Bessel beams, we exemplify the applicability of the developed module for the perforation of thin metal foils by micro drilling.
Type of Medium:
Online Resource
ISSN:
2304-6732
DOI:
10.3390/photonics10040413
Language:
English
Publisher:
MDPI AG
Publication Date:
2023
detail.hit.zdb_id:
2770002-1
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