A Perspective to Control Laser-Induced Periodic Surface Structure Formation at Glancing-Incident Femtosecond Laser-Processed Surfaces

Alexander Jelinek, Manuel J. Pfeifenberger, Reinhard Pippan, Daniel Kiener

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Abstract

The favorable combination of high material removal rate and low influence on the material beneath the ultra-short pulsed laser-processed surface are of particular advantage for sample preparation. This is especially true at the micrometer scale or for the pre-preparation for a subsequent focused ion beam milling process. Specific surface features, the laser-induced periodic surface structures, are generated on femtosecond laser-irradiated surfaces in most cases, which pose an issue for surface-sensitive mechanical testing or microstructural investigations. This work strives for an approach to enhance the surface quality of glancing-incident laser-processed surfaces on the model material copper with two distinctly different grain sizes. A new generalized perspective is presented, in which optimized parameter selection serves to counteract the formation of the laser-induced periodic surface structures, enabling, for example, grain orientation mapping directly on femtosecond laser processed surfaces.
Original languageEnglish
Pages (from-to)4248–4257
Number of pages10
JournalJOM
Volume73
Issue number12
Early online date1 Nov 2021
DOIs
Publication statusPublished - Dec 2021

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Publisher Copyright: © 2021, The Author(s).

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