Scattering of Evanescent Wave by Periodic Array of Nanowires
arXiv:1211.2873 · doi:10.1088/2040-8978/15/8/085002
Abstract
The scattering of electromagnetic wave by a periodic array of nanowires is calculated by the boundary element method. The method is extended to the infinite grating near the interface between two dielectrics. A special Green function is derived that allows to study the evanescent wave. The Rayleigh--- Wood's anomalies are found in the period-to-wavelength dependence of the average Pointing vector in the wave zone. For thin wires the calculations are shown to agree with the two-dimensional coupled dipole approximation.
8 figures
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