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Article overview
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Asymmetric transmission of surface plasmon polaritons on planar gratings | | Vladimir Kuzmiak
; Alexei A. Maradudin
; | | Date: |
1 Sep 2016 | | Abstract: | We describe a surface structure consisting of a metal-air interface where the
metallic part consists of two metallic segments with a periodic modulation of
the interface between them. Such a structure possesses a different
transmissivity for a surface plasmon polariton incident on it from one side of
it than it has for a surface plasmon polariton incident on it from the opposite
side. This asymmetric transmission of a surface plasmon polariton is based on
the suppression of the zero-order Bragg beam which, for a certain value of the
modulation depth, is not transmitted through the structure, while the
diffraction efficiencies of the +1 and -1 Bragg beams can be modified by
varying the period of grating and/or the angle of incidence. For a certain
range of the incidence angle one can observe asymmetry in transmittance for the
-1 mode while the +1 mode is completely suppressed. By varying the material and
geometrical parameters of the diffractive structure one can control the
contrast transmission that characterizes the degree of the asymmetry. This
property of the structure is demonstrated by the results of computer simulation
calculations. | | Source: | arXiv, 1609.0216 | | Services: | Forum | Review | PDF | Favorites | |
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