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Highly confined surface plasmon polariton resonances in rectangular nanopore cavities
Author(s) -
Chen Chang,
Lagae Liesbet,
Maes Guido,
Borghs Gustaaf,
Van Dorpe Pol
Publication year - 2010
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201004268
Subject(s) - surface plasmon polariton , excitation , finite difference time domain method , plasmon , nanopore , surface plasmon , localized surface plasmon , surface plasmon resonance , materials science , field (mathematics) , electromagnetic field , molecular physics , surface (topology) , resonance (particle physics) , condensed matter physics , optics , physics , optoelectronics , atomic physics , nanotechnology , geometry , nanoparticle , quantum mechanics , mathematics , pure mathematics
The excitation of surface plasmons in nanoslits in metal films is known to result in large electromagnetic field enhancements. The enhancement factor strongly depends on the exact geometrical parameters, such as widths and lengths. In this work, we numerically study field enhancement and transmission resonances inside short nanoslits (nanopores) with varying lengths using three‐dimensional finite difference time domain (FDTD) simulations. The results indicate that the excitation of highly confined lateral Fabry–Pérot surface plasmon resonances results in enhancement factors greatly exceeding the two‐dimensional case. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)