Enhanced localized fluorescence in plasmonic nanoantennae

R.M. Bakker, H.-K. Yuan, Z. Liu, V.P. Drachev, A.V. Kildishev, V.M. Shalaev, Rasmus Haugstrup Pedersen, S. Gresillon, Alexandra Boltasseva

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Abstract

Pairs of gold elliptical nanoparticles form antennae, resonant in the visible. A dye, embedded in a dielectric host, coats the antennae; its emission excites plasmon resonances in the antennae and is enhanced. Far-field excitation of the dye-nanoantenna system shows a wavelength-dependent increase in fluorescence that reaches 100 times enhancement. Near-field excitation shows enhanced fluorescence from a single nanoantenna localized in a subwavelength area of similar to 0.15 mu m(2). The polarization of enhanced emission is along the main antenna axis. These observed experimental results are important for increasing light extraction from emitters localized around antennae and for potential development of a subwavelength sized laser. (C) 2008 American Institute of Physics.
Original languageEnglish
JournalApplied Physics Letters
Volume92
Issue number4
Pages (from-to)043101
ISSN0003-6951
DOIs
Publication statusPublished - 2008

Bibliographical note

Copyright (2008) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

  • FRACTALS
  • SILVER NANOPARTICLES
  • RESONANCE
  • DECAY
  • EMISSION

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