Efficient optical near-field energy transfer along an Au nanodot coupler with size-dependent resonance

W. Nomura, T. Yatsui, M. Ohtsu

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We confirmed that the light intensity (λ=785 nm) scattered from an isolated hemispherical Au nanoparticle was resonantly enhanced at a diameter of 200 nm and a height of 50 nm, as observed experimentally using a collection-mode near-field optical microscope. The experimental results agreed with the calculated results using Mie's theory. Furthermore, we observed resonant energy transfer of the optical near-field energy along a chain of Au nanoparticles. The magnitude of the transferred energy increased resonantly at the size of resonant light scattering for an isolated Au nanoparticle (200 nm diameter with 240 nm center-to-center separation).

Original languageEnglish
Pages (from-to)257-259
Number of pages3
JournalApplied Physics B: Lasers and Optics
Volume84
Issue number1-2
DOIs
Publication statusPublished - Jul 1 2006

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couplers
near fields
energy transfer
nanoparticles
Mie scattering
optical microscopes
luminous intensity
light scattering
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Efficient optical near-field energy transfer along an Au nanodot coupler with size-dependent resonance. / Nomura, W.; Yatsui, T.; Ohtsu, M.

In: Applied Physics B: Lasers and Optics, Vol. 84, No. 1-2, 01.07.2006, p. 257-259.

Research output: Contribution to journalArticle

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