Extreme spin-orbit coupling in Hermite-Gaussian beams in a uniaxial crystal

TL;DR

This paper investigates how Hermite-Gaussian beams with complex and real arguments undergo spin-orbit angular momentum transformation in a uniaxial crystal, revealing resonance effects and differences based on beam argument type.

Contribution

It uncovers the resonance conditions and the distinct spin-orbit conversion behaviors for complex versus real argument Hermite-Gaussian beams in uniaxial crystals.

Findings

Complex argument HG beams exhibit sharp spin-orbit angular momentum changes.

Real argument HG beams do not show such intense conversion.

Resonance conditions are identified for the conversion process.

Abstract

Transformation of the spin and orbital angular momentum of Hermite-Gaussian beams of a complex and real argument propagating through a uniaxial crystal is considered. We revealed that the spin and orbital angular momentum of the complex argument HG beam experience a sharp splashes whereas such an intense conversion process is not inherent in a real argument HG beams. The reasons and conditions of the resonance effect are brought to light.