Universal Spin-Momentum Locked Optical Forces
arXiv:1511.02305 · doi:10.1063/1.4941539
Abstract
Evanescent electromagnetic waves possess spin-momentum locking, where the direction of propagation (momentum) is locked to the inherent polarization of the wave (transverse spin). We study the optical forces arising from this universal phenomenon and show that the fundamental origin of recently reported non-trivial optical chiral forces is spin-momentum locking. For evanescent waves, we show that the direction of energy flow, direction of decay, and direction of spin follow a right hand rule for three different cases of total internal reflection, surface plasmon polaritons, and mode of an optical fiber. Furthermore, we explain how the recently reported phenomena of lateral optical force on chiral and achiral particles is caused by the transverse spin of the evanescent field and the spin-momentum locking phenomenon. Finally, we propose an experiment to identify the unique lateral forces arising from the transverse spin in the optical fiber and point to fundamental differences of the spin density from the well-known orbital angular momentum of light. Our work presents a unified view on spin-momentum locking and how it affects optical forces on chiral and achiral particles.
References in corpus (7)
- Quantum spin Hall effect of light
- Chiral nanophotonic waveguide interface based on spin-orbit coupling of light
- Measuring the Transverse Spin Density of Light
- Universal Spin-Momentum Locked Optical Forces
- Transverse Chiral Optical Forces by Chiral Surface Plasmon Polaritons
- Transverse spin of light for all wavefields
- Lateral forces on nanoparticles near a surface under circularly-polarized plane-wave illumination
Cited by in corpus (41)
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- Quantum gyro-electric effect: Photon spin-1 quantization in continuum topological bosonic phases
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- Spin Photonics in 3D Whispering Gallery Mode Resonators
- Optical force and torque on small particles induced by polarization singularities
- Spin-governed topological surfaces and broken spin-momentum locking in a gyromagnetic medium
- Anisotropy-induced Extrinsic Chirality and Chiral Discrimination of Surface Plasmon Polaritons
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- The dependence of evanescent wave polarization on the losses of guided optical modes
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- Sub-wavelength spin excitations in ultracold gases created by stimulated Raman transitions
- Photonic-Spin governed absorption in a mu-near-zero subwavelength gyromagnetic cylinder
- New investigations on the transverse spin of structured optical fields
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