Visualization of space charge field effect on excitons in a GaAs quantum dot by near-field optical wavefunction mapping

Yoshiaki Sugimoto, Nobuhiro Tsumori, Shintaro Nomura, Toshiharu Saiki

    研究成果: Article査読

    9 被引用数 (Scopus)

    抄録

    Near-field photoluminescence (PL) imaging spectroscopy was used to investigate multi-exciton and charged-exciton states confined in a single GaAs interface fluctuation quantum dot. We determined the origin of peaks in the PL spectra by employing a wavefunction mapping technique. We observed distortion of the exciton wavefunction due to the electric field produced by an excess electron at a nearby confined state. Near-field wavefunction mapping was demonstrated to be a powerful tool for visualizing the local environment, which affects the emission properties of quantum dots.

    本文言語English
    ページ(範囲)269-273
    ページ数5
    ジャーナルOptical Review
    16
    3
    DOI
    出版ステータスPublished - 2009 5 1

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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