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.
Bibliographical noteFunding Information:
The work at the Technion was done at the Barbara and Norman Seiden Center for Advanced Opto-Electronics Research. It was supported by the United States–Israel Binational Science Foundation (BSF), Jerusalem, Israel.
- A. Quantum wells
- A. Semiconductors
- D. Optical properties
- E. Light absorption and reflection