The results of analytical modeling of the resonant excitation of evanescent harmonics in a medium formed by parallel metallic nanorods taking into account the spatial dispersion are presented. Analytical expressions are derived for the reflection and transmission coefficients, as well as for the amplitudes of elec- tromagnetic waves inside the medium. These expressions are compared to similar expressions that were pre- viously obtained using a local model of an ultimately anisotropic material without taking into account the spatial dispersion. The obtained expressions are simplified for various partial cases, including the superreso- lution imaging of a source that is located at a considerable distance from the metamaterial layer. A layer of a medium composed from finite-sized wires is numerically simulated and it is demonstrated that, due to the effect of resonant excitation of evanescent spatial harmonics in the layer, subwavelength details of an object that is considerably distant from the layer can be distinguished inside of the layer.
|Number of pages||14|
|Journal||Optics and Spectroscopy (English translation of Optika i Spektroskopiya)|
|State||Published - Apr 2011|