Effect of the incident polarization on in-plane and out-of-plane spin splitting near the critical angle

To reveal the effect of the incident polarization on the spin splitting of the photonic spin Hall effect (that is, the spatial and angular in-plane and out-of-plane spin splitting), we systematically study the phenomena and characteristics of these four spin splitting generated when the beam with arbitrary linear polarization is reflected from the non-absorbing medium interface and the absorbing medium interface. Several features of the relationship between the incident polarization and the four kinds of spin splitting are found. In addition, It is also found that the in-plane angular and spatial shifts are significantly enhanced near the critical angle, even reaching their theoretical upper limit. However, the out-of-plane shifts are not enhanced. The research in this paper will contribute to a deeper understanding of PSHE. These findings can also provide new ideas and methods for precision metrology, photonic manipulation, and photonic device fabrication.

Automated summary

In this study, the effect of incident polarization on the spin splitting of the photonic spin Hall effect was investigated. The relationship between incident polarization and the four types of spin splitting was found, and it was discovered that in-plane angular and spatial shifts are significantly enhanced near the critical angle. These findings contribute to a deeper understanding of the photonic spin Hall effect and provide new ideas and methods for precision metrology, photonic manipulation, and photonic device fabrication.