title: Observation of the spin-based plasmonic effect in nanoscale structures.
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.
authors.affiliation: Micro and Nanooptics Laboratory, Faculty of Mechanical Engineering, and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel.
authors.forename: Y
authors.initials: Y
authors.lastname: Gorodetski
authors.forename: A
authors.initials: A
authors.lastname: Niv
authors.forename: V
authors.initials: V
authors.lastname: Kleiner
authors.forename: E
authors.initials: E
authors.lastname: Hasman