Magnetic Field Control of the Optical Spin Hall Effect

TL;DR

This paper theoretically explores how an external magnetic field influences polarization patterns caused by the optical spin Hall effect in quantum microcavities, revealing a transition in polarization separation types.

Contribution

It demonstrates the magnetic field-induced transition from azimuthal to radial polarization separation in the optical spin Hall effect.

Findings

Magnetic field increases Zeeman splitting in microcavities.

Transition from azimuthal to radial polarization separation.

Effect is experimentally detectable.

Abstract

We investigate theoretically the effect of an external magnetic field on polarization patterns appearing in quantum microcavities due to the optical spin Hall effect (OSHE). We show that increase of the magnetic field perpendicular to the plane of the cavity resulting in the increase of the Zeeman splitting leads to the transition from azimuthal separation of polarizations to their radial separation. This effect can be straightforwardly detected experimentally.