Polarization tailored light driven directional optical nanobeacon.
We experimentally demonstrate all-optical control of the emission directivity of a dipole-like nanoparticle with spinning dipole moment sitting on the interface to an optical denser medium. The particle itself is excited by a tightly focused polarization tailored light beam under normal incidence. The position dependent local polarization of the focal field allows for tuning the dipole moment via careful positioning of the particle relative to the beam axis. As an application of this scheme, we investigate the polarization dependent coupling to a planar two-dimensional dielectric waveguide.
Max Planck Institute for the Science of Light , Guenther-Scharowsky-Straße 1/Bldg. 24, 91058 Erlangen, Germany.
Martin
M
Neugebauer
Thomas
T
Bauer
Peter
P
Banzer
Gerd
G
Leuchs