Polariton-lasing in microcavities filled with fluorescent proteins

Strong coupling between excitons and photons inside a microcavity leads to the formation of cavity polaritons, hybrid light-matter particles. Under suitable conditions, polaritons can emit coherent light without population inversion, whereby polariton lasing can exhibit a threshold at least an order of magnitude less than that of conventional photon lasing in the same material. Polaritons in organic semiconductors are stable at room temperature,...