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

Autor: Maragkaki, Stella, Derrien, Thibault J. -Y., Levy, Yoann, Bulgakova, Nadezhda M., Ostendorf, Andreas, Gurevich, Evgeny L.
Rok vydání: 2017
Předmět:
Zdroj: Appl. Surf. Sci, 417, 88-92 (2017)
Druh dokumentu: Working Paper
DOI: 10.1016/j.apsusc.2017.02.068
Popis: 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.
Databáze: arXiv