Free electron effects on the cavity polariton linewidth in an AlAs/AlGaAs microcavity containing a two-dimensional electron gas

R. Rapaport, A. Qarry, G. Ramon, E. Cohen, A. Ron, L. N. Pfeiffer

Research output: Contribution to journalArticlepeer-review

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Abstract

We report on an experimental study of the microcavity polariton linewidth in an AlAs/AlGaAs microcavity containing GaAs quantum wells (QW) in which a variable density electron gas is photogenerated. The linewidth of the lowest polariton branch shows a clear suppression while that of the other branches show enhancement at narrow detuning energy ranges. A transformation is observed from a strong to weak exciton-cavity mode coupling at a very low photoexcitation intensity.

Original languageEnglish (US)
Pages (from-to)387-391
Number of pages5
JournalSolid State Communications
Volume120
Issue number9-10
DOIs
StatePublished - Nov 2 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry

Keywords

  • A. Quantum wells
  • A. Semiconductors
  • D. Optical properties
  • E. Light absorption and reflection

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