Definition of the stimulated emission threshold in high-$\beta$ nanoscale lasers through phase-space reconstruction

Hachair Xavier, Rémy Braive, Gian-Lucca Lippi +7

Nanoscale lasers sustain few optical modes so that the fraction of spontaneous emission $\beta$ funnelled into the useful (lasing) mode is high (of the order of few 10${}^{-1}$) and the…