3D-steering and superfocusing of second-harmonic radiation through plasmonic nano antenna arrays

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

Abstract

Second-harmonic generation (SHG) of light at nanoparticles provides the possibility to generate light (of a desired frequency) in-situ instead of introducing it by focusing an external light beam. Our theoretical study provides steering SHG light through the superposition of the radiation from a number of nanoparticles which are arranged in a circle. The authors assume cone-shaped or rod-shaped nanoparticles. Their radiation can be modeled as radiating dipoles. The superposition of their fields yields a "hot spot" with a full width at half-maximum of around 100 nm. Even more important, the position of the hot spot within the circular arrangement of nanoantennas can be adjusted in the xy plane simply by changing the incident angle of the exciting beam.

Details

OriginalspracheEnglisch
Aufsatznummer042005
FachzeitschriftJournal of laser applications
Jahrgang24
Ausgabenummer4
PublikationsstatusVeröffentlicht - Sept. 2012
Peer-Review-StatusJa

Externe IDs

ORCID /0000-0002-4531-691X/work/176338865
ORCID /0000-0002-2484-4158/work/176339447

Schlagworte

Schlagwörter

  • generation constructive interference, nano-optics, photochemical writing, second-harmonic, SHG superposition