Tunable in-plane photonic spin Hall effect for vortex structured light on a ReS2-graphene heterostructure

We report tunable in-plane shifts of the photonic spin Hall effect (PSHE) for Laguerre-Gauss mode (LGM) at the glass-air interface coated with a ReS 2 -graphene heterostructure (HS).It is found that the in-plane shifts of PSHE can be effectively modulated by altering the topological charge of the incident LGM and the rotation angle of the ReS 2 near the critical angle.Interestingly, we find anomalous enhanced in-plane shifts of PSHE far from the critical angle with specific polarization angles, which rise from the sharp decrease of the reflection coefficient for the circularly polarized components.Our results will provide useful insight for the adjustment of the in-plane shifts of PSHE.