Abstract
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.
Original language | English |
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Pages (from-to) | 1620-1623 |
Number of pages | 4 |
Journal | Nano Letters |
Volume | 12 |
Issue number | 3 |
DOIs | |
State | Published - 14 Mar 2012 |
Externally published | Yes |
Keywords
- Plasmonics
- angular momentum
- nanoantennas
- polarization
- topological defects
ASJC Scopus subject areas
- Bioengineering
- General Chemistry
- General Materials Science
- Condensed Matter Physics
- Mechanical Engineering