Remund, Stefan Marco; Gafner, Markus; Chaja, Michalina; Urniezius, Aivaras; Butkus, Simas; Neuenschwander, Beat (2020). Milling applications with GHz burst: Investigations concerning the removal rate and machining quality Procedia CIRP, 94, pp. 850-855. 10.1016/j.procir.2020.09.111
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GHz-bursts were reported to be highly efficient for ultra-short pulse laser ablation compared to single pulses. However, most comparisons were made for a drilling process or the machining of dimples. We investigated GHz-bursts (5.4 GHz) on copper, brass, stainless steel, silicon, zirconium oxide, soda-lime glass and sapphire for surface structuring applications. Inconsistent with the published results neither a higher removal rate, nor an improvement in the machining quality in case of the metals and silicon was observed, in the contrary, a tremendous drop in the specific removal rate of 90% for the metals and 60% for silicon, compared to single pulses, was measured when a 25 pulse burst (maximum of laser system) was applied. The situation differs for zirconium oxide, where only a moderate influence was observed and for soda-lime glass and sapphire where the specific removal rate increased by a factor of 2.3 and 6, when the number of pulses per burst were raised from 1 to 25.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
School of Engineering and Computer Science > Institute for Surface Applied Laser, Phototonics and Surface Technologies ALPS School of Engineering and Computer Science > Institute for Surface Applied Laser, Phototonics and Surface Technologies ALPS > ALPS / Laser Surface Engineering School of Engineering and Computer Science |
Name: |
Remund, Stefan Marco; Gafner, Markus; Chaja, Michalina; Urniezius, Aivaras; Butkus, Simas and Neuenschwander, Beat  0000-0001-9715-8557 |
Subjects: |
Q Science > QC Physics |
ISSN: |
2212-8271 |
Language: |
English |
Submitter: |
Beat Neuenschwander |
Date Deposited: |
23 Sep 2020 10:19 |
Last Modified: |
04 Nov 2021 21:46 |
Publisher DOI: |
10.1016/j.procir.2020.09.111 |
Uncontrolled Keywords: |
Laser microprocessing; ultra short pulses; GHz bursts; laser matter interaction; ablation efficiency; opimum fluence |
ARBOR DOI: |
10.24451/arbor.12373 |
URI: |
https://arbor.bfh.ch/id/eprint/12373 |
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