Resonant excitation and anti-Stokes luminescence of GaAs single quantum dots

K. Edamatsu, C. Watatani, T. Itoh, S. Shimomura, S. Hiyamizu

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We have investigated micro-photoluminescence (μ-PL) and excitation (μ-PLE) spectra of a single GaAs/AlGaAs quantum dot grown on a GaAs (411) A surface. We observed sharp resonant lines in both μ-PL and μ-PLE spectra, corresponding to the discrete energy levels of the dot. When the sample was excited at one of the resonant lines, resonant luminescence lines appeared not only in Stokes' side but also in anti-Stokes' side. We discuss the possible origins of the anomalous anti-Stokes luminescence.

Original languageEnglish
Pages (from-to)143-146
Number of pages4
JournalJournal of Luminescence
Volume94-95
DOIs
Publication statusPublished - 2001 Dec 1
Externally publishedYes

Keywords

  • Anti-Stokes luminescence
  • GaAs
  • Quantum dots
  • Single quantum dot

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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