paper 150205071447

Abstract

The electromagnetic waves propagation in a two-dimensional periodic array of zinc oxide nanowaveguides covered with a thin metal film is solved by the separation of variables method in cylindrical coordinates. The numerical results obtained by our method are in good agreement with the ones computed by the commercial software COMSOL MultiphysicsTM over all optical range and have minor deviations for the wavelength range close to the critical wavelength. Resonances located at the amplitude-frequency characteristics of optical nanoantennas may be interpreted as resonances of circular bilayer nanowaveguide segments with the ZnO core covered with thin metal shell. The results may also be used to predict the resonant wavelength of two- dimensional periodic arrays of ZnO nanorods coated with a thin metal layer and grown on a dielectric substrate.

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Evgeny M. Kaidashev

Galina A. Kalinchenko

Alexander M. Lerer

Alexey Sergeevich Puzanov

Pavel Evgenjevich Timoshenko