Abstract
Numerical 3D simulations of plasmonic-photonic systems with periodicity d~λ under oblique incidence are challenging in the visible spectral range. Many interacting modes, strong dispersion of the metal, as well as the complex geometry and sharp features resulting in hot spots have to be included. Different phases of temporal harmonics require significant modifications of conventional broadband FDTD approaches. For this reason quantitative modeling of such structures is usually restricted only to the normal incidence (θ=0°) reflection R, transmission T and extinction E=1-R-T. To find the absorption A, which is important in active nanoplasmonic and metamaterial devices, one has to take into account the often neglected diffraction D.
© 2013 IEEE
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