Polariton lasing in a hybrid bulk ZnO microcavity

This work demonstrates polariton lasing in a bulk ZnO planar microcavity under non-resonant optical pumping at a small negative detuning (δ ≈ −1/6 of the 130 meV vacuum Rabi splitting) and at a temperature of 120 K. The strong coupling regime is maintained at lasing threshold, since the coherent nonlinear emission from the lower polariton branch (LPB) occurs at zero in-plane wavevector, well below the uncoupled cavity mode. The contribution of multiple localized polariton modes above threshold and the non-thermal polariton statistics indicate that the system operates in a far-from-equilibrium regime, likely related to the moderate photon lifetime and in-plane photonic disorder in the cavity.

Read publication