Numerical Study of Wave Propagation in Uniaxially Anisotropic Lorentzian Backward Wave Slabs

TL;DR

This paper numerically investigates wave propagation and refraction in uniaxially anisotropic backward wave slabs using FDTD, confirming theoretical predictions about wavefront shapes and wave vector regions.

Contribution

It provides the first detailed numerical analysis of wave behavior in uniaxially anisotropic Lorentzian backward wave slabs, validating theoretical models.

Findings

Wavefront shapes match theoretical predictions

Regions of real and complex wave vectors are consistent with theory

Electric field distributions are characterized inside and behind the slab

Abstract

The propagation and refraction of a cylindrical wave created by a line current through a slab of backward wave medium, also called left-handed medium, is numerically studied with FDTD. The slab is assumed to be uniaxially anisotropic. Several sets of constitutive parameters are considered and comparisons with theoretical results are made. Electric field distributions are studied inside and behind the slab. It is found that the shape of the wavefronts and the regions of real and complex wave vectors are in agreement with theoretical results.