Beam engineering for high throughput material processing with high power, femtosecond lasers

• DOI: 10.1117/12.2507970
• Publication Date: 2019-03-04T13:03:33Z
• Authors: Girolamo Mincuzzi; Alice Rebière; Baptiste Le Goaec; Simon Nourry; Pagano Paolo; Marc Faucon; Rainer Kling
• Keywords: Materials processing

Ultra-short pulse laser (UPL) industry is counting on high power P sources (100W class) to increase the throughput of a wide variety industrial fabrication process. Nevertheless, this poses challenge overcome heat accumulation phenomena observed when exceeds few tens Watts compromising machining quality. Novel beam engineering strategies are required tackle issue and guarantee with high, distinctive, UPL Here study reported processes carried out 100W class femtosecond lasers following two possible i.e. scanning speed (both 100 m/s polygon scanner head 2D, 20 fast, galvo-head) parallel processing multiple beams (obtained both DOE an SLM head). Results show that by increasing from W also increases nearly factor 10 for micro-cutting (with galvo DOE) even higher surface texturing scanner) while quality kept unchanged. Furthermore, we optimised use precise micro drilling matrix holes showing benefit technological approach in term throughput. A full characterisation results via optic electronic microscopy will be reported. We believe all these further USP technology effectiveness level which primed applications.