RAGHUNATHAN, S. B.; GAN, Choon How; VAN DIJK, T.; EA-KIM, Buntha; SCHOUTEN, H. F.; UBACHS, W.; LALANNE, Philippe; VISSER, T. D.

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

RAGHUNATHAN, S. B.
Department of Electrical Engineering

GAN, Choon How
Laboratoire Charles Fabry / Naphel
Electronic and Photonics Department

VAN DIJK, T.
Department of Physcis and Astronomy

Langue

Article de revue

Ce document a été publié dans

Optics Express. 2012, vol. 20, n° 14, p. 15326-15335

Optical Society of America - OSA Publishing

Résumé en anglais

We report a plasmon steering method that enables us to dynamically control the direction of surface plasmons generated by a two-mode slit in a thin metal film. By varying the phase between different coherent beams that are incident on the slit, individual waveguide modes are excited. Different linear combinations of the two modes lead to different diffracted fields at the exit of the slit. As a result, the direction in which surface plasmons are launched can be controlled. Experiments confirm that it is possible to distribute an approximately constant surface plasmon intensity in any desired proportion over the two launching directions. We also find that the anti-symmetric mode generates surface plasmons more efficiently than the fundamental symmetric mode.< Réduire

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Plasmon switching: observation of dynamic surface plasmon steering by selective mode excitation in a subwavelength slit

Langue

Ce document a été publié dans

Résumé en anglais

URI

Origine

Unités de recherche