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- Title
Enhanced Spin Hall Effect of Light in Spheres with Dual Symmetry.
- Authors
Gao, Dongliang; Shi, Ran; Miroshnichenko, Andrey E.; Gao, Lei
- Abstract
The spin–orbit interaction (SOI) of light is usually weak in dielectric particles and recently is enhanced in plasmonic structures. This Letter Article shows that strong SOI can arise in dielectric particles with dual symmetry, resulting in enhanced spin Hall effect of scattered light. It reveals the relationship between spin Hall shift and dual symmetry. The interference between electric and magnetic dipolar modes plays an important role in enhancing the spin Hall shift. Strong SOI is demonstrated by the optical singularity of the orbital angular momentum. The results can find potential applications in dielectric‐based photonic devices, such as optical sensing and manipulation of subwavelength nanoparticles. Strong spin–orbit interaction (SOI) can arise in dielectric particles with dual symmetry. The SOI is demonstrated by the optical singularity of the orbital angular momentum, which redirects the angular momentum around the particle. The twisted and curved streamlines of orbital momentum will give rise to a rapid increment of geometric phases, resulting in enhanced spin Hall effect of scattered light.
- Subjects
SPIN Hall effect; SYMMETRY (Physics); LIGHT scattering; ZWITTERIONS; SPIN-orbit interactions
- Publication
Laser & Photonics Reviews, 2018, Vol 12, Issue 11, pN.PAG
- ISSN
1863-8880
- Publication type
Article
- DOI
10.1002/lpor.201800130