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Updated: Jan 20, 2026

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Spin Hall Effect of Light in a Random Medium.

Tamara Bardon-Brun1, Dominique Delande1, Nicolas Cherroret1

  • 1Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL University, Collège de France; 4 Place Jussieu, 75005 Paris, France.

Physical Review Letters
|September 7, 2019
PubMed
Summary

Optical beams in disordered materials show a spin Hall effect and spin-to-orbital angular momentum conversion. These effects, observable via polarimetric measurements, occur as light deviates from paraxiality.

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Area of Science:

  • Optics and Photonics
  • Condensed Matter Physics
  • Quantum Optics

Background:

  • Light propagation in disordered media is complex.
  • Non-paraxial beam behavior is crucial for understanding light-matter interactions.
  • Spin-orbit coupling in light is a key phenomenon.

Purpose of the Study:

  • To investigate the spin Hall effect in optical beams.
  • To explore spin-to-orbital angular momentum conversion.
  • To theoretically describe these phenomena in disordered materials.

Main Methods:

  • Microscopic statistical approach to light propagation.
  • Analysis of non-paraxial beam propagation.
  • Theoretical modeling of spin-dependent effects.

Main Results:

  • Demonstration of spin Hall effect for optical beams.
  • Observation of spin-to-orbital angular momentum conversion.
  • Identification of conditions for detecting these phenomena.

Conclusions:

  • Disordered materials induce spin-dependent effects in optical beams.
  • These effects are linked to deviations from paraxiality.
  • Polarimetric measurements offer a viable detection method.