Demonstration of modulatable optical near-field interactions between dispersed resonant quantum dots

Naoya Tate, Makoto Naruse, Wataru Nomura, Tadashi Kawazoe, Takashi Yatsui, Morihisa Hoga, Yasuyuki Ohyagi, Yoko Sekine, Hiroshi Fujita, Motoichi Ohtsu

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    We experimentally demonstrated the basic concept of modulatable optical near-field interactions by utilizing energy transfer between closely positioned resonant CdSe/ZnS quantum dot (QD) pairs dispersed on a flexible substrate. Modulation by physical flexion of the substrate changes the distances between quantum dots to control the magnitude of the coupling strength. The modulation capability was qualitatively confirmed as a change of the emission spectrum. We defined two kinds of modulatability for quantitative evaluation of the capability, and an evident difference was revealed between resonant and non-resonant QDs.

    Original languageEnglish
    Pages (from-to)18260-18271
    Number of pages12
    JournalOptics Express
    Volume19
    Issue number19
    DOIs
    Publication statusPublished - Sep 12 2011

    All Science Journal Classification (ASJC) codes

    • Atomic and Molecular Physics, and Optics

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