Direct observation of optical excitation transfer based on resonant optical near-field interaction

Wataru Nomura, T. Yatsui, T. Kawazoe, M. Naruse, E. Runge, C. Lienau, M. Ohtsu

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    This article reports the direct observation of longdistance optical excitation transfer based on resonant optical near-field interactions in randomly distributed quantum dots (QDs). We fabricated optical excitation transfer paths based on randomly distributed QDs by using CdSe/ZnS core-shell QDs and succeeded for the first time in obtaining output signals resulting from a unidirectional optical excitation transfer length of 2.4 μm. Furthermore, we demonstrate that the optical excitation transfer occurs via the resonant excited levels of the QDs with a comparative experiment using nonresonant QDs. This excitation-transfer mechanism allows for intersecting, non-interacting nano-optical wires.

    Original languageEnglish
    Pages (from-to)257-262
    Number of pages6
    JournalApplied Physics B: Lasers and Optics
    Volume107
    Issue number2
    DOIs
    Publication statusPublished - May 1 2012

    All Science Journal Classification (ASJC) codes

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

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