Observation of Interaction of Spin and Intrinsic Orbital Angular Momentum of Light

Abstract

Interaction of spin and intrinsic orbital angular momentum of light is observed, as evidenced by length-dependent rotations of both spatial patterns and optical polarization in a cylindrically-symmetric isotropic optical fiber. Such rotations occur in straight few-mode fiber when superpositions of two modes with parallel and anti-parallel orientation of spin and intrinsic orbital angular momentum (IOAM=$2\hslash$) are excited, resulting from a degeneracy splitting of the propagation constants of the modes.

6 pages, 5 figures, and a detailed supplement. Version 3 corrects a typo and adds the journal reference

References in corpus (3)

• Goos-Hänchen and Imbert-Fedorov beam shifts: An overview
• Geometrodynamics of Spinning Light
• Conservation of orbital angular momentum in air core optical fibers

Cited by in corpus (6)

• Quantum Theory of Light in a Dispersive Structured Linear Dielectric: a Macroscopic Hamiltonian Tutorial Treatment
• Systematic control of Raman scattering with topologically induced chirality of light
• Interpreting mode degeneracy lifting in high-index-contract optical fibers as spin-orbit interaction or Imbert-Fedorov shift of orbital angular momentum modes
• Extrinsic spin angular momentum carried by plasmonic vortex in terahertz cylindrical corrugated waveguide
• Polarization-Induced Interaction as a Perturbation within Orbital Angular Momentum(OAM) Modes of an Optical Fiber
• Deep-learning-based recognition of multi-singularity structured light