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  LIPSS on thin metallic films: New insights from multiplicity of laser-excited electromagnetic modes and efficiency of metal oxidation

Dostovalov, A. V., Derrien, T., Lizunov, S. A., Přeučil, F., Okotrub, K. A., Mocek, T., et al. (2019). LIPSS on thin metallic films: New insights from multiplicity of laser-excited electromagnetic modes and efficiency of metal oxidation. Applied Surface Science, 491, 650-658. doi:10.1016/j.apsusc.2019.05.171.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-86FC-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-C861-D
Genre: Journal Article

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 Creators:
Dostovalov, A. V.1, 2, Author
Derrien, T.3, 4, Author              
Lizunov, S. A.3, 5, Author
Přeučil, F.3, 6, Author
Okotrub, K. A.1, Author
Mocek, T.3, Author
Korolkov, V. P.1, 2, Author
Babin, S. A.1, 2, Author
Bulgakova, N. M.3, 5, Author
Affiliations:
1Institute of Automation and Electrometry of the SB RAS, ou_persistent22              
2Novosibirsk State University, ou_persistent22              
3HiLASE Centre, Institute of Physics, Czech Academy of Sciences, ou_persistent22              
4Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
5S. S. Kutateladze Institute of Thermophysics SB RAS, ou_persistent22              
6Institute of Particle and Nuclear Physics, Faculty of Mathematics and Physics, Charles University, ou_persistent22              

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Free keywords: Laser-induced periodic surface structures; Ultrafast laser processing; Thin metallic film; Oxidation; Surface electromagnetic wave; Optical feedback mechanism
 Abstract: Thin Cr films 28-nm thick deposited on glass substrates were processed by scanning low-intensity femtosecond laser pulses with energy well below single-pulse damage threshold. Two types of laser-induced periodic surface structures (LIPSS) were produced, depending on the scanning velocity, (1) parallel to laser light polarization with periodicity somewhat smaller than laser wavelength and (2) perpendicular to polarization with spatial period much smaller than wavelength. All structures are formed as protrusions above the initial film surface and exhibit a high degree of oxidation. To explain formation of the LIPSS and their conversion from one to another type, a rigorous numerical approach for modeling surface electromagnetic waves in thin-film geometry has been developed, which takes into account the change of optical properties of material due to laser-induced oxidation and porosity. The approach addresses the multiplicity of electromagnetic modes allowed for thin films. It has been found that the low spatial frequency LIPSS parallel to laser polarization, which are formed at low scanning velocities, are well described by the Sipe theory for surfaces of low roughness. The SEW mode responsible for high spatial frequency LIPSS formation at high scanning velocities has been identified. The mechanisms of optical feedback and transformation between types of LIPSS with scanning velocity have been proposed.

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Language(s): eng - English
 Dates: 2019-04-222019-02-182019-05-152019-05-172019-10-15
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.apsusc.2019.05.171
 Degree: -

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Project name : The research of A.V.D. and S.A.B. is financed by the state budget of Russian Federation (IA&E project № AAAA-A17-117062110026-3). The research of T.J.-Y.D., S.A.L., F.P., T.M. and N.M.B. is financed by the European Regional Development Fund and the state budget of the Czech Republic (project BIATRI, No. CZ.02.1.01/0.0/0.0/15_003/ 0000445; project HiLASE CoE, No. CZ.02.1.01/0.0/0.0/15_006/ 0000674; programme NPU I, project No. LO1602).
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Title: Applied Surface Science
  Abbreviation : Appl. Surf. Sci.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier B.V.
Pages: - Volume / Issue: 491 Sequence Number: - Start / End Page: 650 - 658 Identifier: ISSN: 0169-4332
CoNE: https://pure.mpg.de/cone/journals/resource/954928576736