Abstract
Exciton polariton is a quasi-particle formed in a microcavity, which keeps the exciton and the photon property, e.g. the exciton longitudinal–transversal energy splitting. In this work we observed a splitting as large as 0.19meV in the polariton emission mode in a GaAs single quantum well microcavity for the heavy hole as well as a 0.137meV for the light hole excitons. The splitting behavior was analyzed as a function of excitation power and the polarization degree. The results indicate one longitudinal–transversal splitting emission light with mixed spin states and crossed linear polarizations for the longitudinal–transversal modes, and a condensation behavior only for the heavy hole transversal mode.
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