Photoluminescence up-conversion of single quantum dots in a microcavity.

ORAL

Abstract

We have studied photoluminescence upconversion in single self-assembled InGaAs quantum dots that are embedded in a planar optical microcavity. Upconversion is generally thermal and can be characterized unambiguously due to the absence of inhomogeneous broadening. A side-excitation photoluminescence technique allows us to detect arbitrarily close to the laser line thereby distinguishing otherwise unresolvable energy splittings. This allows the investigation of upconversion as a function of both temperature and energy separation.

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Authors

  • E. B. Flagg

    • Dept. of Physics, The University of Texas at Austin

  • A. Muller

    • Department of Physics, The University of Texas at Austin
    • Dept. of Physics, The University of Texas at Austin

  • X. Y. Wang

    • Dept. of Physics, The University of Texas at Austin

  • D. G. Deppe

    • College of Optics and Photonics (CREOL), University of Central Florida

  • W. Ma

    • Department of Physics, University of Arkansas

  • J. Zhang

    • Department of Physics, University of Arkansas

  • G. J. Salamo

    • Department of Physics, University of Arkansas

  • M. Xiao

    • Department of Physics, University of Arkansas

  • C. K. Shih

    • Dept. of Physics, The University of Texas at Austin