The photonic spin Hall effect (PSHE) at the optical interface is a polarization-dependent phenomenon of incident light. The described methodology is a novel strategy for controlling the active polarization mode of the enhanced PSHE. The PSHE is enhanced for both horizontal (H) and vertical (V) polarized light in the \(\sim\) 1.5 mm to the submillimeter range. The enhanced PSHE has been measured for the reflected light from the modified Kretschmann configuration. An additional thin dielectric (glass) layer on the ultrathin metal (Ag, Al) layer provides simultaneous surface plasmon resonance (SPR) and wave-guiding effects. Furthermore, we demonstrated that by changing the physical parameter of the structure, we could tune the enhancement of PSHE along with the control on polarization mode. This research paves the way for new photonic devices with ultra-high sensitivity for metrological applications. Furthermore, depending on the light spin, this work enables a degree of freedom in the choosing of input light polarization for numerous potential applications.
