Wide-angle giant photonic spin Hall effect

to generate giant spin Hall effect (namely with 𝜹/𝝀 > 𝟏𝟎 𝟐 ) have severe limitations, particularly its occurrence only over a narrow angular cone (with a width of ∆𝜽 < 𝟏 𝒐 ). Here we propose a universal scheme to realize the wide-angle giant photonic spin Hall effect with ∆𝜽 > 𝟕𝟎 𝒐 by exploiting the interface between free space and uniaxial epsilon-near-zero media. The underlying mechanism is ascribed to the almost-perfect polarization splitting between s and p polarized waves at the designed interface. Remarkably, this almost-perfect polarization splitting does not resort to the interference effect and is insensitive to the incident angle, which then gives rise to the wide-angle giant photonic spin Hall effect. polarization splitting at the interface between free space and the uniaxial epsilon-near-zero medium. We identify a particular setup where the spin-dependent transverse shift is mainly determined by the reflection ratio |𝑟 < |/|𝑟 = | between p and s polarized waves. Remarkably, the uniaxial epsilon-near-zero medium can be