Three-step description of single-pulse formation of laser-induced periodic surface structures on metals

0533959 - FZÚ 2021 RIV CH eng J - Journal Article
Gurevich, E.L. - Levy, Yoann - Bulgakova, Nadezhda M.
Three-step description of single-pulse formation of laser-induced periodic surface structures on metals.
Nanomaterials. Roč. 10, č. 9 (2020), s. 1-15, č. článku 1836. E-ISSN 2079-4991
R&D Projects: GA MŠMT EF15_003/0000445; GA MŠMT EF15_006/0000674; GA MŠMT LO1602; GA MŠMT LM2015086
EU Projects: European Commission(XE) 739573 - HiLASE CoE
Grant - others:OP VVV - BIATRI(XE) CZ.02.1.01/0.0/0.0/15_003/0000445; OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institutional support: RVO:68378271
Keywords : femtosecond laser * LIPSS * plasmons * two-temperature model * self-organization * three-step model
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 5.076, year: 2020
Method of publishing: Open access

Two different scenarios are usually invoked in the formation of femtosecond Laser-Induced Periodic Surface Structures (LIPSS), either “self-organization” mechanisms or a purely “plasmonic” approach. In this paper, a three-step model of formation of single-laser-shot LIPSS is summarized. It is based on the periodic perturbation of the electronic temperature followed by an amplification, for given spatial periods, of the modulation in the lattice temperature and a final possible relocation by hydrodynamic instabilities. An analytical theory of the evolution of the temperature inhomogeneities is reported and supported by numerical calculations on the examples of three different metals: Al, Au, and Mo. The criteria of the possibility of hydrodynamic instabilities are also discussed.
Permanent Link: http://hdl.handle.net/11104/0312185