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

    All Science Journal Classification (ASJC) codes

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

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