Abstract

A Goos–Hänchen shift (GHS) due to an orthorhombic biaxial slab with/without topological conducting states placed in isotropic media was investigated. The effect of varying host media, changing topological conducting states, and left/right asymmetries on the co/cross-polarized reflection coefficients and the corresponding GHS was investigated. Numerical calculations revealed that large negative/positive GHS occurs near the reflectance dips (local reflectance minimum) due to sudden changes in the amplitude of the reflection coefficient. Position and amplitude of the GHS near these reflectance dips are affected by anisotropy and surface admittance. Furthermore, numerical calculations also revealed that the GHS is left/right symmetric for an orthorhombic biaxial slab with/without topological conducting states. However, if the optic axes of a slab with/without a topological conducting state are rotated along any direction, the resulting GHS becomes left/right asymmetric.

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