Abstract
Observation of surface-plasmon phenomena that are dependent upon the handedness of the circularly polarized incident light (spin) is presented. The polarization-dependent near-field intensity distribution obtained in our experiment is attributed to the presence of a geometric phase arising from the interaction of light with an anisotropic and inhomogeneous nanoscale structure. A near-field vortex surface mode with a spin-dependent topological charge was obtained in a plasmonic microcavity. The remarkable phenomenon of polarization-sensitive focusing in a plasmonic structure was also demonstrated.
| Original language | English |
|---|---|
| Article number | 043903 |
| Journal | Physical Review Letters |
| Volume | 101 |
| Issue number | 4 |
| DOIs | |
| State | Published - 25 Jul 2008 |
| Externally published | Yes |