Optimizing the specific removal rate with the burst mode under varying conditions

Jäggi, Beat; Remund, Stefan Marco; Zhang, Yiming; Kramer, Thorsten; Neuenschwander, Beat (2017). Optimizing the specific removal rate with the burst mode under varying conditions JLMN-Journal of Laser Micro/Nanoengineering, 12(3), pp. 258-266. 10.2961/jlmn.2017.03.0015

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The influence of pulse-bursts is investigated using different spot sizes and different wavelengths as well. The specific removal is calculated and compared as a function the peak fluence of the single pulses (not total fluence of the burst package). A drop in the specific removal for copper and alumi-num is observed for a 2 pulse-burst, whereas for a 3 pulse-burst the specific removal rate is larger than for the 2 pulse-burst and may exceed the rate observed in the single pulse mode in special cases. Possible explanations for these observations are given based on shielding effects and a pre-conditioning by previous pulses. The usage of pulse-bursts may also increase the process window and in addition influence the surface quality. The formation of small cavities on the machined sur-face often appearing in steel can be shifted to higher fluences if pulse-bursts are applied.

Item Type:	Journal Article (Original Article)
Division/Institute:	School of Engineering and Computer Science > Institute for Surface Applied Laser, Phototonics and Surface Technologies ALPS
Name:	Jäggi, Beat; Remund, Stefan Marco; Zhang, Yiming; Kramer, Thorsten and Neuenschwander, Beat0000-0001-9715-8557
ISSN:	1880-0688
Language:	English
Submitter:	Florence Jaquet
Date Deposited:	30 Mar 2020 11:12
Last Modified:	04 Nov 2021 21:46
Publisher DOI:	10.2961/jlmn.2017.03.0015
ARBOR DOI:	10.24451/arbor.9378
URI:	https://arbor.bfh.ch/id/eprint/9378