The evidence of the role of surface plasmon polaritons in formation of femtosecond highly-regular laser-induced periodic structures on Cr films

0501899 - FZÚ 2019 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Dostovalov, A.V. - Derrien, Thibault - Přeučil, Filip - Mocek, Tomáš - Korolkov, V.P. - Babin, S.A. - Bulgakova, Nadezhda M.
The evidence of the role of surface plasmon polaritons in formation of femtosecond highly-regular laser-induced periodic structures on Cr films.
Journal of Physics: Conference Series. Vol. 1092. Bristol: IOP, 2018, s. 1-4, č. článku 012025. ISSN 1742-6588.
[International Conference on Metamaterials and Nanophotonics /3./ (METANANO 2018). Sochi (RU), 17.09.2018-21.09.2018]
Grant CEP: GA MŠMT EF15_003/0000445; GA MŠMT LO1602; GA ČR GA16-12960S; GA MŠMT EF15_006/0000674
Grant ostatní: 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
Institucionální podpora: RVO:68378271
Klíčová slova: ultrashort laser pulses * periodic surface structures * chromium * thin films * metal oxydation * plasmon polariton modes
Obor OECD: Optics (including laser optics and quantum optics)

Cr films of controlled thickness deposited on glass substrates were irradiated by a high number of low-intensity femtosecond laser pulses below the Cr single-pulse damage threshold,producing periodic surface structures (LIPSS) of very high regularity via metal oxidation.To address the multiplicity of electromagnetic modes allowed for thin films, a rigorous numerical approach for modeling surface plasmon polaritons (SPP) in thin-film geometry has been developed.Three types of modes are predicted: the classical SPP with periodicities Λ ~ λ (λ is laser wavelength) at air-film interface, and Λ ~ λ/n at film-substrate interface (n is refractive index of substrate),and a propagation mode Λ ~ λ/nCr where nCr is refractive index of film material.

Trvalý link: http://hdl.handle.net/11104/0293880