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Atmospheric pressure plasma-assisted femtosecond laser engraving of aluminium

  • In this contribution, we report on the impact of direct dielectric barrier discharge argon plasma at atmospheric pressure on femtosecond laser engraving of aluminium. It is shown that the assisting plasma strongly affects the surface geometry and formation of spikes of both laser-engraved single lines and patterns of adjacent lines with an appropriate overlap. Further, it was observed that the overall ablation depth is significantly increased in case of large-scale patterning whereas no notable differences in ablation depth are found for single lines. Several possible mechanisms and underlying effects of this behaviour are suggested. The increase in ablation depth is supposed to be due to a plasma-induced removal of debris particles from the cutting point via charging and oxidation as supported by EDX analysis of the re-solidified debris. Furthermore, the impact of a higher degree of surface wrinkling as well as direct interactions of plasma species with the aluminium surface on the ablation process are discussed.

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Author:Christoph GerhardORCiD, Thomas Gimpel, Daniel Tasche, Jennifer Koch, Stephan Brückner, Günter Flachenecker, Stephan Wieneke, Wolfgang Schade, Wolfgang ViölORCiD
URN:urn:nbn:de:kobv:526-opus4-10521
DOI:https://doi.org/10.1088/1361-6463/aab6e6
ISSN:1361-6463
Parent Title (English):Journal of Physics D: Applied Physics
Document Type:Article
Language:English
Year of Publication:2018
Publishing Institution:Technische Hochschule Wildau
Release Date:2018/10/08
Volume:51
First Page:1
Last Page:7
Source:Gerhard, C., Gimpel, T., Tasche, D., Koch, J., Brückner, S., Flachenecker, G., et al. (2018). Atmospheric pressure plasma-assisted femtosecond laser engraving of aluminium Journal of Physics D: Applied Physics. 51, 175201. https://doi.org/10.1088/1361-6463/aab6e6
Faculties an central facilities:Fachbereich Ingenieur- und Naturwissenschaften
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 621 Angewandte Physik
Licence (German):Creative Commons - CC BY 3.0 - Namensnennung 3.0 Unported
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