Fig. 1. Illustration of ZnO WG microcavity and angle-resolved photoluminescence spectroscopy technique

Fig. 2. Polariton dispersions in ZnO WG microcavity by using angle-resolved photoluminescence spectroscopy technique with weak excitation and different experimental configurations

Fig. 3. Power-dependence measurement of polariton condensate in ZnO WG microcavity at room temperature

Fig. 4. Theoretical simulation，solid curve shows experimental result well below threshold