Imaging properties of a nonlinear multilayered superlens

Abstract

Imaging properties of a metal/nonlinear dielectric structure with nonequal thickness layers as a superlens have been investigated by using the optical transfer function (OTF) and the lateral intensity distributions at the imaging plane for a given object. It has been shown that even when permittivity of the metal and nonlinear dielectric are mismatched, both modulation transfer function (MTF) and phase transfer function (PTF) show high cutoff frequency at optical wavelength. This is the case of a superlens and also shows a good improvement rather than a metal/linear dielectric superlens.