Real-space mapping of exciton wave function in a GaAs quantum dot by near-field optical imaging spectroscopy

Kazunari Matsuda, Toshiharu Saiki, Shintaro Nomura, Masaru Mihara, Yoshinobu Aoyagi

Research output: Contribution to journalArticle


We describe near-field photoluminescence imaging spectroscopy of a single naturally occurring GaAs quantum dot in a narrow quantum well. A spatial mapping of the center-of-mass wave function of the exciton state in the quantum dot is demonstrated due to the realization of a high spatial resolution (30 nm) of imaging spectroscopy and the selection of a large quantum dot (100 nm). We observe an elongation along the [110] crystal axis of the wave function in the exciton state.

Original languageEnglish
Pages (from-to)285-288
Number of pages4
JournalPhysica Status Solidi (B) Basic Research
Issue number2
Publication statusPublished - 2003 Jul 1


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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