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Related Experiment Video

Updated: Dec 31, 2025

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Spin-Orbit Optical Hall Effect.

Shenhe Fu^1,2, Chaoheng Guo^1,3, Guohua Liu¹

¹Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.

Physical Review Letters

|January 11, 2020

Summary

This summary is machine-generated.

Researchers discovered a new optical Hall effect by separating light

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Area of Science:

Optics and Photonics
Quantum Optics
Condensed Matter Physics

Background:

The optical Hall effect separates angular momentum via photonic spin-orbit interaction.
Existing effects separate spin-spin or orbit-orbit angular momentum.
Spin-orbit angular momentum separation (spin-orbit Hall effect) was unexplored.

Purpose of the Study:

To demonstrate the existence of the spin-orbit Hall effect.
To explore its underlying mechanism and potential applications.

Main Methods:

Adiabatic evolution of light beam polarization on a higher-order Poincaré sphere.
Utilizing crystal birefringence to control the effect.

Main Results:

Demonstrated the spin-orbit Hall effect for the first time.
Observed separation of intrinsic spin and orbital angular momentum components.
Achieved equal magnitudes of spin and orbital angular momentum with opposite signs.

Conclusions:

The spin-orbit Hall effect arises from adiabatic polarization evolution on a higher-order Poincaré sphere.
This effect can be controlled using crystal birefringence.
Potential applications include particle manipulation using separated orbital angular momentum.