Organic polariton lasing and the weak to strong coupling crossover

Published in Physical Review Letters, 2018

Artem Strashko, Peter Kirton, Jonathan Keeling Phys. Rev. Lett. 121, 193601 (2018)

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.193601

https://arxiv.org/abs/1808.07683

Following experimental realizations of room temperature polariton lasing with organic molecules, we present a microscopic model that allows us to explore the crossover from weak to strong matter-light coupling. We consider a nonequilibrium Dicke-Holstein model, including both strong coupling to vibrational modes and strong matter-light coupling, providing the phase diagram of this model in the thermodynamic limit. We discuss the mechanism of polariton lasing, uncovering a process of self-tuning, and identify the relation and distinction between regular dye lasers and organic polariton lasers.