Fig. 2: Steady-state optical properties of the studied systems.

The k∥-dependent absorption of a sample 1 and b sample 2 shows that both cavities are red-tuned with anticrossings at 6 and 9.1 μm−1, respectively. The corresponding incidence angles φ are indicated on the top x-axis, and, in the present representation, depend on the energy (y-axis). The photon/exciton ratio for samples 1 and 2 can be read out for the P+ branch in c, d and for the P− branch in e, f.