Differential measurements of Raman coherence and two-exciton correlations in quantum wells

Scot A. Hawkins, Eric J. Gansen, Martin J. Stevens, Arthur L. Smirl, I. Rumyantsev, R. Takayama, Nai-Hang Kwong, Rudolf Binder, G. Steel

Research output: Contribution to journalArticle

Abstract

Quantum beats involving the light-hole and heavy-hole excitons in GaAs quantum wells are studied using both conventional and novel temporally gated differential detection techniques. The contributions of the exciton-exciton correlations are separated from those of the intervalence-band Raman coherence and the interband (population) coherence by monitoring the signal in the probe direction and by taking advantage of the polarization selection rules for the excitonic transitions. The results are shown to be in agreement with a theoretical analysis based on the dynamics-controlled truncation formalism.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number11
DOIs
StatePublished - Jul 15 2003

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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