Open AccessGeneral properties of the surface charge pattern of one-dimensional metallic gratings
Author(s) -
Haitao Liu,
Philippe Lalanne
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.016753
Subject(s) - surface plasmon polariton , grating , optics , surface plasmon , plasmon , diffraction grating , charge (physics) , electron , physics , surface (topology) , materials science , optoelectronics , geometry , mathematics , quantum mechanics
Under light illumination, metallic gratings present unexpected and fascinating phenomena, which are due to the complex charge patterns generated on the grating surfaces. The moving electrons are due to the launching of surface plasmon polaritons (SPPs), but only in part. We derive analytical expressions quantifying the plasmonic character of the surface charge patterns, i.e. the contribution of SPPs to its formation. The expressions have a general significance, in the sense that they may be applied to a variety of geometries and spectral ranges, irrespective of whether the grating absorbs, transmits, reflects, or how strongly it resonates.