Intrinsic transverse spin angular momentum of fiber eigenmodes
arXiv:1912.02650 · doi:10.1103/PhysRevA.95.053827
Abstract
We study the transverse spin angular momentum of fiber eigenmodes. As an intrinsic property of fiber eigenmodes, it becomes considerable in optical nanofibers and, especially, increases sharply in the evanescent field. We derive analytical expressions of this angular momentum, and present its density distribution inside andoutside nanofibers. Significantly, we find the optimal ratio of the fiber core radius to the wavelength to obtain the maximum surface transverse spin. For instance, the optimal fiber radius is one fourth of the wavelength for the fundamental mode. Furthermore, we investigate the spin flow of each guided mode on the nanofiber surface and the transverse mechanical effects originated from the transverse spin on small particles.
References in corpus (20)
- Spin-orbit interactions of light
- Transverse and longitudinal angular momenta of light
- Quantum spin Hall effect of light
- Chiral nanophotonic waveguide interface based on spin-orbit coupling of light
- Extraordinary momentum and spin in evanescent waves
- Lateral Optical Force On Chiral Particles Near a Surface
- Dual electromagnetism: Helicity, spin, momentum, and angular momentum
- Does a Surface Polariton Have Spin?
- Universal spin-momentum locking of evanescent waves
- Chirality of nanophotonic waveguide with embedded quantum emitter for unidirectional spin transfer
- Optical diode based on the chirality of guided photons
- Characterizing optical chirality
- Measuring the Transverse Spin Density of Light
- Transverse spin and momentum in two-wave interference
- Subwavelength particles in an inhomogeneous light field: Optical forces associated with the spin and orbital energy flows
- Universal Spin-Momentum Locked Optical Forces
- The ubiquitous photonic wheel
- Emergence of transverse spin in optical modes of semiconductor nanowires
- Dominant chiral optical forces in vicinity of optical nanofibers
- Mode conversion and orbital angular momentum transfer among multiple modes by helical gratings
Cited by in corpus (5)
- Ultra-directional high-efficient chiral silicon photonic circuits
- Effects of surface plasmons on spin currents in a thin film system
- Electron spin transport driven by surface plasmon polariton
- Optical angular momentum derivation and evolution from vectorial field superposition
- Optically induced electron spin currents in the Kretschmann configuration