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Optics express 15, 18 (2007) 11427-11432
Unidirectional excitation of surface plasmons by slanted gratings
Nicolas Bonod 1, E. Popov 1, Lifeng Li 2, B. Chernov 3
For the Tsinghua university (China), State University of telecommunications (Russia) collaboration(s)
(2007-09-03)

Surface plasmon excitation by normally incident light on surface-relief metallic diffraction gratings is studied numerically. Predominantly unidirectional excitation is achieved with a grating of either a slanted lamellar or an inclined sinusoidal groove profile, both having shallow depths. Maps of Poynting vector illustrate that the energy flow turns from normal incidence in the far-field region to a pattern almost parallel to the grating surface in the required direction of excitation of a single SPP wave.
1:  Institut FRESNEL (IF)
CNRS : UMR6133 – Université de Provence - Aix-Marseille I – Université Paul Cézanne - Aix-Marseille III – Ecole Centrale de Marseille
2:  Tsinghua University
Tsinghua University
3:  State University of Telecommunications
Russian Academy of Science
Engineering Sciences/Optics / Photonic
surface plasmons – diffractions gratings
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