Properties of photoluminescence from single gold nanorods induced by near-field two-photon excitation

Kohei Imura, Hiromi Okamoto

    Research output: Contribution to journalArticle

    51 Citations (Scopus)

    Abstract

    We investigated properties of photoluminescence from single gold nanorods induced by near-field two-photon excitation, using scanning near-field optical microscopy. Photoluminescence spectrum showed two peaks around 550 and 650 nm in wavelengths regardless of the rod dimensions, whereas the intensity ratio of the two spectral components varies from rod to rod. We discussed the observed spectral features of photoluminescence based on electromagnetic calculations and found that the observed spectral features can be explained in terms of local field enhancement in the vicinity of the gold nanorod due to plasmon-mode excitation.

    Original languageEnglish
    Pages (from-to)11756-11759
    Number of pages4
    JournalJournal of Physical Chemistry C
    Volume113
    Issue number27
    DOIs
    Publication statusPublished - 2009 Jul 9

    Fingerprint

    Nanorods
    Gold
    nanorods
    near fields
    Photoluminescence
    rods
    Photons
    gold
    photoluminescence
    photons
    excitation
    Near field scanning optical microscopy
    electromagnetism
    microscopy
    Wavelength
    scanning
    augmentation
    wavelengths

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Electronic, Optical and Magnetic Materials
    • Surfaces, Coatings and Films
    • Energy(all)

    Cite this

    Properties of photoluminescence from single gold nanorods induced by near-field two-photon excitation. / Imura, Kohei; Okamoto, Hiromi.

    In: Journal of Physical Chemistry C, Vol. 113, No. 27, 09.07.2009, p. 11756-11759.

    Research output: Contribution to journalArticle

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