Giant longitudinal spin Hall effect for elliptically polarized light under surface plasmon resonance

Abstract We propose a novel and simple method for obtaining the giant longitudinal spin Hall effect (SHE) of reflected light beam when elliptically polarized (instead linearly light) at telecommunication wavelength is obliquely incident on prism–sodium interface excited by surface plasmon resonance. By introducing spatially averaged Stokes parameter S ˉ 3 non-uniformly field, understanding generation mechanism SHE from new perspective realized. The under reaches 60.28 μ m optimal setup, splitting direction can be switched adjusting amplitude ratio angle phase difference light. These findings open way precise measurement ellipticity design fiber-optic devices.