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Optical system for multi Bessel beam high power ultrashort pulsed laser processing using a spatial light modulator

  • We report on an optical setup for multi Bessel beam processing combining a refractive axicon and a spatial light modulator. Based on their particular beam profile, Bessel beams exhibit various advantages over conventional Gaussian beams for ultrashort pulsed laser processing. Especially for micromachining of transparent materials, applications such as micro-hole drilling or the generation of voids benefit from the increased focal length of the applied Bessel beam. In addition, on account of the significantly increased average output power of industrial ultrashort pulsed lasers over the last years, there is a high demand on multi spot applications for using the available laser power in efficient production processes. Our optical concept combines the dynamic possibilities of beam splitting using spatial light modulator with the benefits of Bessel beams facilitating multi Bessel beam processing.

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Metadaten
Author:Christian Lutz, Simon Schwarz, Stefan RungORCiD, Jan Marx, Cemal Esen, Ralf HellmannORCiD
Parent Title (English):Lasers in Manufacturing - LiM 2021
Document Type:Conference Proceeding
Language:English
Year of Completion:2021
Release Date:2021/07/14
GND Keyword:Ultrakurzzeitlaser; Lichtmodulator
Urheberrecht:1
research focus :Intelligent Systems / Intelligent Sensors and Signals
Materials / Innovative Material Processing
Materials / Material Testing & Sensor Technology
Licence (German):Keine Lizenz - es gilt das deutsche Urheberrecht
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