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Picosecond timescale carrier dynamics of InAs quantum dots: The role of a continuum background

Superlattices and Microstructures, ISSN: 0749-6036, Vol: 43, Issue: 5, Page: 445-448
2008
  • 2
    Citations
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  • 16
    Captures
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    2
    • Citation Indexes
      2
  • Captures
    16

Article Description

We have investigated the ultrafast carrier dynamics in Molecular Beam Epitaxy (MBE)-grown InAs/InGaAs/GaAs quantum dots emitting at 1.3 μm by means of time resolved photoluminescence upconversion measurements with a time resolution of about 200 fs. The detection energies scan the spectral region from the energy of the quantum dot excitonic transition up to the barrier layer absorption edge. We found, under high excitation intensity, that the intrinsic electronic states are populated mainly by carriers directly captured from the barrier.

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