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Updated: Jan 20, 2026
01:30
The Hall Effect
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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
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.
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.
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