Gyrotropic impact upon negatively refracting surfaces

TL;DR

This paper investigates how gyrotropic materials affect surface wave propagation at interfaces with negatively refracting media, analyzing non-reciprocal dispersion, reflection phenomena, and the Goos-Hanchen shift across various frequency regimes.

Contribution

It provides a comprehensive analysis of surface wave behavior at gyrotropic-negative refractive interfaces, including non-reciprocal dispersion and reflection effects, applicable across multiple frequency ranges.

Findings

Non-reciprocal surface wave dispersion characterized

Resonance effects influence reflection and beam shifts

Impact on Goos-Hanchen shift demonstrated

Abstract

Surface wave propagation at the interface between different types of gyrotropic materials and an isotropic negatively refracting medium, in which the relative permittivity and relative permeability are, simultaneously, negative is investigated. A general approach is taken that embraces both gyroelectric and gyromagnetic materials, permitting the possibility of operating in either the low GHz, THz or the optical frequency regimes. The classical transverse Voigt configuration is adopted and a complete analysis of non-reciprocal surface wave dispersion is presented. The impact of the surface polariton modes upon the reflection of both plane waves and beams is discussed in terms of resonances and an example of the influence upon the Goos-Hanchen shift is given.