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Spin-Dependent Plasmonics Based on Interfering Topological Defects

2012; American Chemical Society; Volume: 12; Issue: 3 Linguagem: Inglês

10.1021/nl204556r

1530-6992

Nir Shitrit, Sergey Nechayev, Vladimir Kleiner, Erez Hasman,

Photonic and Optical Devices

Observation of spin-dependent plasmonics based on the interference of topological defects in the near-field is presented. We utilize the surface plasmons' scattering dynamics from localized vortex sources to create spinoptical devices as an ensemble of isolated nanoantennas to observe a "giant" spin-dependent plasmonic vortex and a spin-dependent plasmonic focusing lens. The spin-orbit point spread function, a spiral wavefront, is introduced, where the optical spin is a degree of freedom.