Optical fine structure of single ordered GaAs quantum dots

نویسندگان

  • S. Kiravittaya
  • M. Benyoucef
  • R. Zapf-Gottwick
  • A. Rastelli
  • O. G. Schmidt
چکیده

We fabricated ordered GaAs/AlGaAs quantum dots (QDs) on patterned GaAs(0 0 1) substrates and investigated their optical properties by micro-photoluminescence (m-PL) spectroscopy. Sharp excitonic lines with single photon emission properties were observed. Polarization-dependent PL was performed to resolve the optical fine structure splitting of neutral excitonic lines and to identify the neutral biexciton line. r 2007 Elsevier B.V. All rights reserved. PACS: 68.65.Hb; 78.67.Hc; 78.55. m

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تاریخ انتشار 2007