title: Observation of optical spin symmetry breaking in nanoapertures.
abstract: Observation of a spin symmetry breaking effect in plasmonic nanoscale structures due to spin-orbit interaction is presented. We demonstrate a nanoplasmonic structure which exhibits a crucial role of an angular momentum (AM) selection rule in a light-surface plasmon scattering process. In our experiment, the intrinsic AM (spin) of the incident radiation is coupled to the extrinsic momentum (orbital AM) of the surface plasmons via spin-orbit interaction. Due to this effect, we achieved a spin-controlled enhanced transmission through a coaxial nanoaperture.
authors: Micro and Nanooptics Laboratory, Faculty of Mechanical Engineering, and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel.
authors: Yuri
authors: Y
authors: Gorodetski
authors: Nir
authors: N
authors: Shitrit
authors: Itay
authors: I
authors: Bretner
authors: Vladimir
authors: V
authors: Kleiner
authors: Erez
authors: E
authors: Hasman