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The work investigates the enhancement potential for nonlinear effects of periodically arranged metallic nanostructures consisting of a pair of gold nanowires separated by a thin dielectric spacer of magnesium fluoride (MgF2) . Emphasis is put on chi(3) nonlinearities for which it is assumed that the intrinsic nonlinearity of MgF2 prevails against those in the metallic nanostructures. To access theoretically...
We introduce a procedure to retrieve anisotropic effective parameters of metamaterials at oblique incidence. We show that such a homogenization fails near plasmonic resonances for all reasonable aspect ratios and discuss possible implications.
We derive the dispersion relation of light in metamaterials and define an effective index. Emphasis is on propagation directions deviating from the principal crystallographic axis. This index is compared with results from a finite slab.
We analyze beam displacements that occur upon reflection at interfaces between homogeneous media and metamaterials. Emphasis is put on system requirements, the techniques to predict the shift and the peculiarities in the presence of metamaterials.
We introduce a procedure to retrieve angle- and polarization-dependent effective parameters of metamaterials based on reflection and transmission at a finite slab. Their meaning in the presence of strong spatial dispersion and anisotropy is discussed.
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