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Interaction between localized and delocalized surface plasmon polariton modes in a metallic photonic crystal
Author(s) -
Christ A.,
Zentgraf T.,
Tikhodeev S. G.,
Gippius N. A.,
Martin O. J. F.,
Kuhl J.,
Giessen H.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200668055
Subject(s) - delocalized electron , plasmon , localized surface plasmon , surface plasmon polariton , materials science , surface plasmon , coupling (piping) , grating , condensed matter physics , metal , molecular physics , optoelectronics , chemistry , physics , metallurgy , organic chemistry
We experimentally and theoretically study the controlled coupling between localized and delocalized surface plasmon modes supported by a multilayer metallic photonic crystal slab. The model system to visualize the interaction phenomena consists of a gold nanowire grating and a spatially separated homogeneous silver film. We show that plasmon‐plasmon coupling leads to drastic modification of the optical properties in dependence on the chosen geometrical parameters. Strong coupling and plasmon hybridization can be clearly observed. The numerical calculations reveal excellent agreement with the experiments. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)