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Highly-dynamic laser technology for ultra-fast and precise micro texturing of three-dimensional surfaces

  • Laser engraving requires a precise ablation per pulse through all layers of a depth map. To transform this process towards areas of a square meter and more within an acceptable time, needs high-power ultra-short pulsed lasers for the precision and a high scan speed for the beam distribution. Scan speeds in the range of several 100 m/s can be achieved with a polygon scanner. In this work, a polygon scanner has been utilized within a roll-engraving machine to treat an 800 x 220 mm² (L x Dia) roll with 0.55 m² in a laser engraving process. The machine setup, the processing strategy and the data handling has been investigated and result in an efficient large area process. Pre-tests were performed with a multi-MHz-frequency nanosecond-pulsed laser, to investigate the processing strategy. A method to overcome the duty cycle of the polygon scanner was found in the synchronization of two polygons, enabling the use on a single laser source in a time-sharing concept. The throughput and the utilization of the laser source can be increased by the factor of two

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Author:Florian Rößler, Christian Mikley, André Streek
Parent Title (German):13. Mittweidaer Lasertagung
Publisher:Hochschule Mittweida
Place of publication:Mittweida
Document Type:Conference Proceeding
Year of Completion:2023
Publishing Institution:Hochschule Mittweida
Contributing Corporation:MOEWE Optical Solutions GmbH, Mittweida
Release Date:2023/12/19
Tag:high throughput; polygon scanner; ultra-fast
Page Number:4
First Page:77
Last Page:80
Open Access:Frei zugänglich
Licence (German):License LogoUrheberrechtlich geschützt