Measurement of Cavity-Polariton Dispersion Curve from Angle-Resolved Photoluminescence Experiments

We study the photoluminescence of quantum well excitons imbedded in monolithic microcavities. In the strong coupling regime, a coupled-mode situation develops, the cavity polariton. We describe a model of the photoluminescence phenomenon in this regime, which by comparison with experiments enables us to determine the cavity-polariton dispersion curve. An excellent agreement with a theoretical model is found.