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Symmetry‐sensitive plasmonic enhancement of nonlinear optical intensity in nano‐micro hierarchical structures on silver
Author(s) -
Ogata Yoichi,
Vorobyev Anatoliy,
Guo Chunlei
Publication year - 2016
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.6126
Subject(s) - second harmonic generation , plasmon , symmetry (geometry) , surface plasmon , anisotropy , nano , nonlinear optical , excitation , materials science , surface (topology) , nonlinear optics , surface second harmonic generation , metal , nonlinear system , nanotechnology , optics , optoelectronics , molecular physics , chemistry , physics , geometry , laser , quantum mechanics , mathematics , composite material , metallurgy
We created nano‐micro hierarchical surface structures on Ag and measured their optical second harmonic generation (SHG) response. We found that the hierarchical surface structures can significantly modify the optical nonlinearity of the metal surfaces. The macroscopic symmetries of surface's shape influenced SHG. In addition, the observed SHG on Ag showed the contribution by the surface plasmon excitation. We also observed unique anisotropic enhancement of SHG in metal. We attribute our observations to both symmetry and surface plasmons on nano‐micro hierarchical structures. Copyright © 2016 John Wiley & Sons, Ltd.