This work presents a novel method for achieving controlled polarization-selective enhancement of the Photonic Spin Hall Effect (PSHE) by integrating waveguiding effects with surface plasmonic behavior. The conventional plasmonic wave generation, limited to TM waves, is expanded by introducing waveguiding effects, enabling resonances for TE waves. This dual resonance mechanism contributes to the enhancement of PSHE for both horizontally (H) and vertically (V) polarized waves. Utilizing thin metal layers (Ag and Al) of a few nanometers in conjunction with waveguiding glass layers under 500nm thickness, significant enhancements of PSHE are demonstrated at the submillimeter scale. This integrated approach offers a promising avenue for tailoring and controlling PSHE with applications in advanced photonic devices.
Previously, the enhanced photonic spin Hall effect (PSHE) in plasmonic devices was only possible with horizontal polarization (H-polarized). The wave-guiding surface plasmonic resonance (SPR) effect is used to report enhanced PSHE of reflected light for both horizontal and vertical polarized waves in this work. Further findings suggest the manipulation of active polarization mode and control in PSHE enhancement by simply adjusting the thickness of the wave-guiding layer. A finite element technique simulation study is used to investigate the influence of an additional thin dielectric waveguiding layer on PSHE. This research opens up the possibility of using both horizontal and vertical polarization-based quantum devices and sensors, in which light spin plays an important role.
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