Abstract
Circularly polarized electric fields incident on subwavelength apertures produce near-field phase singularities with phase vorticity depending on the polarization handedness. These near-field phase singularities combine with those associated with orbital angular momentum and result in polarization-dependent transmission. We produce arbitrary phase vorticity in the longitudinal component of scattered electric fields by varying the incident beam and aperture configuration.
- Received 13 January 2009
DOI:https://doi.org/10.1103/PhysRevLett.104.083903
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