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:

Department of Engineering and Information Technology > Institute for Applied Laser, Photonics and Surface Technologies

Name:

Jäggi, Beat; Remund, Stefan Marco; Zhang, Yiming; Kramer, Thorsten and Neuenschwander, Beat

ISSN:

1880-0688

Language:

English

Submitter:

Florence Jaquet

Date Deposited:

30 Mar 2020 11:12

Last Modified:

30 Mar 2020 11:12

Publisher DOI:

10.2961/jlmn.2017.03.0015

ARBOR DOI:

10.24451/arbor.9378

URI:

https://arbor.bfh.ch/id/eprint/9378

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