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arXiv · 1702.03655

Wavelength Dependence of Picosecond Laser-Induced Periodic Surface Structures on Copper

Stella Maragkaki·Thibault J. -Y. Derrien·Yoann Levy·Nadezhda M. Bulgakova·Andreas Ostendorf·Evgeny L. Gurevich
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Abstract

The physical mechanisms of the laser-induced periodic surface structures (LIPSS) formation are studied in this paper for single-pulse irradiation regimes. The change in the LIPSS period with wavelength of incident laser radiation is investigated experimentally, using a picosecond laser system, which provides 7-ps pulses in near-IR, visible, and UV spectral ranges. The experimental results are compared with predictions made under the assumption that the surface-scattered waves are involved in the LIPSS formation. Considerable disagreement suggests that hydrodynamic mechanisms can be responsible for the observed pattern periodicity.

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Stella Maragkaki, Thibault J. -Y. Derrien, Yoann Levy, Nadezhda M. Bulgakova, Andreas Ostendorf, Evgeny L. Gurevich. 2017-02-13. Wavelength Dependence of Picosecond Laser-Induced Periodic Surface Structures on Copper. https://doi.org/10.1016/j.apsusc.2017.02.068

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