Performance Analysis of Hetero-Structure Nanoresonator Assisted Enhanced Photonic Spin Hall Effect

This work investigates the generation and enhancement of the photonic spin hall effect (PSHE) in a hetero-structure-based nanophotonic resonator structure. A bi-layer nanophotonic structure having a center defect layer is considered for the analysis. The impact of incidence angle and defect layer thickness on PSHE generation is thoroughly investigated. The PSHE-induced spin splitting exhibits a strong dependency on the defect layer's optical thickness. The analytical results demonstrate a maximum PSHE transverse displacement of around 5.57 times the incident wavelength, which is around 39.25% higher than the recently reported values. Additionally, the structure shows a defect layer thickness tolerance of around 15.6 nm to obtain an enhanced PSHE.