Electromagnetic Spin-Orbit Interactions via Scattering

Details Electromagnetic Spin-Orbit Interactions via Scattering Electromagnetic Spin-Orbit Interactions via Scattering

2008-06-15

arxiv.org/abs/0806.2470v1

Physics

Optics

5 pages, 5 figures

Scientific paper

The longitudinal components of orthogonal-circularly polarized fields carry a phase singularity that changes sign depending on the polarization handedness. The addition of orbital angular momentum adds to or cancels this singularity and results in polarization-dependent scattering through round and square apertures, which we demonstrate analytically, numerically, and experimentally. By preparing the incident polarization and arranging the configuration of sub-wavelength apertures, we produce shadow-side scattered fields with arbitrary phase vorticity.

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