Tuning of an optical dimer nanoantenna by electrically controlling its load impedance.
Optical antennas are elementary units used to direct optical radiation to the nanoscale. Here we demonstrate an active control over individual antenna performances by an external electrical trigger. We find that by an in-plane command of an anisotropic load medium, the electromagnetic interaction between individual elements constituting an optical antenna can be controlled, resulting in a strong polarization and tuning response. An active command of the antenna is a prerequisite for directing light wave through the utilization of such a device.
Berthelot
Johann
J
Institut Carnot de Bourgogne, CNRS UMR 5209, Université de Bourgogne, 9 Avenue Alain Savary, Dijon, France.
Bouhelier
Alexandre
A
Huang
Caijin
C
Margueritat
Jérémie
J
Colas-des-Francs
Gérard
G
Finot
Eric
E
Weeber
Jean-Claude
JC
Dereux
Alain
A
Kostcheev
Sergei
S
Ahrach
Hicham Ibn El
HI
Baudrion
Anne-Laure
AL
Plain
Jérôme
J
Bachelot
Renaud
R
Royer
Pascal
P
Wiederrecht
Gary P
GP