Coherent effects in a thin film of metamaterial

TL;DR

This paper theoretically investigates the refraction of ultrashort pulses at dielectric interfaces with a thin nonlinear metamaterial film, revealing oscillatory echo phenomena through numerical simulations.

Contribution

It develops a model for the coherent response of thin nonlinear metamaterial films composed of nanoparticles and nanocircuits, and demonstrates oscillatory echo effects.

Findings

Oscillatory echo observed in numerical simulations

Model applicable for thin metamaterial film analysis

Coherent responses characterized in inhomogeneous meta-atom systems

Abstract

The refraction is theoretically considered of ultimately short pulses at interface of two dielectrics that contains a thin film of nonlinear metamaterial. For the model of metamaterial composed of nanoparticles and magnetic nanocircuits (split-ring resonators) the equations are obtained suitable for describing the coherent responses of such film. The numerical simulation demonstrates the emergence of oscillatory echo in inhomogeneous system of meta-atoms. It is supposed that the reported methods are applicable for investigation of thin metamaterial films.