Fig. 1: Strong light-matter interaction in the dye-filled microcavity. | Communications Physics

Fig. 1: Strong light-matter interaction in the dye-filled microcavity.

From: Mechanisms of blueshifts in organic polariton condensates

Fig. 1

a Angle-dependent reflectivity spectra of the microcavity recorded at different angles exhibit clear anti-crossing at the exciton resonance energy Ex (gray dotted line) and indicate the formation of lower (LPB, gray dashed line) and upper (UPB, gray dashed line) exciton–polariton branches. Polariton dispersion relation in b is plotted by combing the data of photoluminescence imaging acquired in a Fourier space (rainbow color density plot in a log scale) with the polariton states extracted from angle-dependent reflectivity measurements (red squares). Error bars are within the marker size and correspond to standard deviations of the best-fit results of angle-dependent reflectivity spectra. Fitting curves of the LPB and UPB, together with the cavity mode Ec and energy of exciton resonance Ex are shown as a white dashed curves.

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