Enhanced spin Hall effect of transmitted light through a thin epsilon-near-zero slab.

Spin Hall effect (SHE) of transmitted light is small even near the Brewster angle in general case, e.g., at the air-glass interface. However, we find that the SHE can be enhanced when a linearly polarized Gaussian beam transmits through a thin epsilon-near-zero slab due to the difference between the Fresnel transmission coefficients t(p) and t(s). For a vertically polarized incident beam, the spin-dependent transverse displacement of transmitted beam is enhanced near the Brewster angle, while it takes large value over a large angle scale for a horizontally polarized incident beam.