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Title: Influence of substrate microcrystallinity on the orientation of laser-induced periodic surface structures

The research in this paper deals with the angular dependence of the formation of laser-induced periodic surface structures (LIPSS) by linearly polarized nanosecond laser pulses on polycrystalline austenitic stainless steel. Incident angles ranging from 45° to 70° lead to the generation of superimposed merely perpendicular oriented LIPSS on steel as well as on monocrystalline (100) silicon which was used as a reference material. Additional extraordinary orientations of superimposing LIPSS along with significantly different periodicities are found on polycrystalline steel but not on (100) silicon. Electron backscatter diffraction measurements indicate that the expansion of these LIPSS is limited to the grain size and affected by the crystal orientation of the individual grains. Atomic force microscopy imaging shows that LIPSS fringe heights are in good agreement with the theoretically predicted penetration depths of surface plasmon polaritons into stainless steel. These results indicate that optical anisotropies must be taken into account to fully describe the theory of light-matter interaction leading to LIPSS formation.
Authors:
; ; ;  [1] ; ;  [2] ;  [1] ;  [3]
  1. Department of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße 4, 35032 Marburg (Germany)
  2. Department of Physical-Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 58, 35392 Gießen (Germany)
  3. (Germany)
Publication Date:
OSTI Identifier:
22492778
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 13; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCIDENTS; ANISOTROPY; ATOMIC FORCE MICROSCOPY; AUSTENITIC STEELS; DIFFRACTION; GRAIN SIZE; LASERS; ORIENTATION; PENETRATION DEPTH; PERIODICITY; POLARONS; POLYCRYSTALS; SILICON; STAINLESS STEELS; SUBSTRATES; SURFACES