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Proceedings Paper

Surface plasmon polariton excitation and extraordinary optical transmission in metallic grating structures with subwavelength slits
Author(s): Viktoriia E. Babicheva; Yurii E. Lozovik
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Paper Abstract

We explore structures composed of two gratings with subwavelength slits in silver films. We study the extraordinary transmission of electromagnetic wave in these structures and the conditions at which the transmittance is equal to zero. Dependences on various geometric parameters are analyzed. We show that the zero of transmittance i.e. the suppression of the extraordinary transmission is observed at wavelength that corresponds to the excitation of surface plasmon polariton in a gap between two gratings with subwavelength slits. We also research structures composed of arrays of slits in thick films set close to continuous thin films. We reveal that an efficiency of the transmission of the slit mode of the grating into the thin film is greater than an efficiency of the transmission of plane wave into the same film. The investigations are performed through numerical simulations with the Fourier modal method.

Paper Details

Date Published: 10 May 2010
PDF: 10 pages
Proc. SPIE 7712, Nanophotonics III, 77122Y (10 May 2010); doi: 10.1117/12.854649
Show Author Affiliations
Viktoriia E. Babicheva, Moscow Institute of Physics and Technology (Russian Federation)
Yurii E. Lozovik, Institute for Spectroscopy (Russian Federation)

Published in SPIE Proceedings Vol. 7712:
Nanophotonics III
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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