Transient study of the dynamic response of the veselago-pendry superlens

Sub-wavelength imaging involves the interaction of electromagnetic fields with objects that have dimensions of the order of the wavelength. This is characteristic of microwave technology and thus calls for tools and concepts familiar to microwave engineers. We analyze the plasmonic surface modes of the superlens and their excitation by the evanescent modes of the object field using a waveguide model. The resolution of the superlens, determined by the highest spectral component transmitted, is limited by the settling time of the plasmonic response and on the dynamic range of the superresolution system. Other limiting effects, such as losses, are deliberately excluded to highlight the above phenomena.