Numerical study of wave propagation in uniaxially anisotropic Lorentzian backward-wave slabs.
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 a finite-difference time-domain method. 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 wave fronts and the regions of real and complex wave vectors are in agreement with theoretical results.
Kärkkäinen
M K
MK
Radio Laboratory, Helsinki University of Technology, P.O. Box 3000, FIN-02015 HUT, Finland. mkk@cc.hut.fi