Excitation of surface plasmon-polariton waves in the prism-coupled configurations guided by reciprocal, uniaxially chiral, bianisotropic material

摘要

Excitation of the surface plasmon-polariton (SPP) waves guided by the planar interface of a metal and a reciprocal, uniaxially chiral, bianisotropic material was investigated. The characteristics of SPP waves in two prism-coupled configurations were observed and also verified by the spatial profiles when the waves were guided by the interface perpendicular to the direction of the chirality and uniaxiality. The SPP waves were found to be neither p - nor s-polarized in nature when the chirality parameter was large. The SPP wave was excited in the Turbadar-Kretschmann-Raether (TKR) configuration by p-polarized incident light only, that also when the real part of the chirality parameter was smaller than a threshold value. The excitation of SPP wave was not supported by s-polarized incident light in the TKR configuration. However, the excitation of SPP wave was found in the Turbadar-Otto configuration for both the p-polarized incidence and the s-polarized incidence.