Polarization anisotropic luminescence of tunable single lateral quantum dot molecules

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Abstract

We investigate the photoluminescence polarization anisotropy of self-assembled individual lateral InGaAs/GaAs quantum dot molecules. In contrast to similarly grown single quantum dots, the dot molecules exhibit a remarkable degree of linear polarization, which remains almost unchanged when a lateral electric field is applied to tune the exciton wave function and, thus, the luminescence spectral properties. We discuss the nature of this polarization anisotropy and suggest possible causes based on the system's symmetry and heterostructure alloy composition.

Journal

  • Journal of Applied Physics  

    Journal of Applied Physics 111(6), 063526, 2012-03-15 

    American Institute of Physics

Codes

  • NII Article ID (NAID)
    120004043740
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    0021-8979
  • Data Source
    IR 
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