Tuning of an Optical Dimer Nanoantenna by Electrically Controlling Its Load Impedance

Johann Berthelot (1) , Alexandre Bouhelier (1) , C. Huang (1) , Jeremie Margueritat (1) , Gérard Colas Des Francs (1) , Eric Finot (1) , Jean-Claude Weeber (1) , Alain Dereux (1) , Serguei Kochtcheev (2) , Hicham Ibn El Ahrach (2) , Anne-Laure Baudrion (2) , Jerome Plain (2) , Renaud Bachelot (2) , Pascal Royer (2) , Gary P. Wiederrecht (3)

1 ICB - Laboratoire Interdisciplinaire Carnot de Bourgogne
2 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique
3 ANL - Argonne National Laboratory [Lemont]

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.

Mots clés: METAL NANOPARTICLES; FREEDERICKSZ TRANSITION; LIQUID-CRYSTALS; LIGHT-SCATTERING; PLASMON RESONANCES; PAIRS; ANTENNA; EMISSION; NANOCIRCUIT

Domaines: Micro et nanotechnologies/Microélectronique; Optique / photonique; Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

Johann Berthelot, Alexandre Bouhelier, C. Huang, Jeremie Margueritat, Gérard Colas Des Francs, et al.. Tuning of an Optical Dimer Nanoantenna by Electrically Controlling Its Load Impedance. Nano Letters, 2009, 9, pp.3914-3921. ⟨10.1021/nl902126z⟩. ⟨hal-00472363⟩