In this paper, the tunable Goos–Hänchen (GH) effect on a graphene-based hyperbolic metamaterial slab has been investigated
using the transfer matrix and finite element methods. It was shown that the excitation of the surface polaritons in the THz
frequency region results in enhanced GH shift at the interface of the slab which can be controlled and tuned by changing
the orientation of the optical axis of the slab, the chemical potential of graphene monolayers and the thickness of the air gap
layer. These may have interesting applications in the optical devices.