Direct observation of dynamic surface acoustic wave controlled carrier injection into single quantum posts using phase-resolved optical spectroscopy

S. Völk; F. Knall; F. J. R. Schülein; T. A. Truong; H. Kim; P. M. Petroff; A. Wixforth; H. J. Krenner

doi:10.1063/1.3541881

Direct observation of dynamic surface acoustic wave controlled carrier injection into single quantum posts using phase-resolved optical spectroscopy

Mesoscale and Nanoscale Physics 2011-01-14 v2 Quantum Physics

Authors: S. Völk , F. Knall , F. J. R. Schülein , T. A. Truong , H. Kim , P. M. Petroff , A. Wixforth , H. J. Krenner

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Abstract

A versatile stroboscopic technique based on active phase-locking of a surface acoustic wave to picosecond laser pulses is used to monitor dynamic acoustoelectric effects. Time-integrated multi-channel detection is applied to probe the modulation of the emission of a quantum well for different frequencies of the surface acoustic wave. For quantum posts we resolve dynamically controlled generation of neutral and charged excitons and preferential injection of holes into localized states within the nanostructure.

Keywords

acoustics

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@article{arxiv.1011.1898,
  title  = {Direct observation of dynamic surface acoustic wave controlled carrier injection into single quantum posts using phase-resolved optical spectroscopy},
  author = {S. Völk and F. Knall and F. J. R. Schülein and T. A. Truong and H. Kim and P. M. Petroff and A. Wixforth and H. J. Krenner},
  journal= {arXiv preprint arXiv:1011.1898},
  year   = {2011}
}

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10 pages, 4 figures

Direct observation of dynamic surface acoustic wave controlled carrier injection into single quantum posts using phase-resolved optical spectroscopy

Abstract

Keywords

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