Study on one-way guiding InSb structures for THz spectral region

Abstract

We have studied theoretically guiding structures based on the highly-dispersive polaritonic InSb semiconductor material, in the presence of an external magnetic field. The Voigt magnetooptic configuration has been imposed to enable nonreciprocity (and one-way propagation) bringing new interesting phenomena in connection with magnetoplasmons. For that purpose, we have developed an efficient two dimensional numerical technique based on the magnetooptic aperiodic rigorous coupled wave analysis (MOaRCWA), capable of numerically handling such problems. Taking into account the InSb permittivity tensor dispersions, together with corresponding nonreciprocal dispersion diagrams, we have explored - via the MOaRCWA technique - nonreciprocal behavior of these THz guiding structures.