Fig. 3: Dynamics of SF and CESF under different pumping densities.
From: Cooperative excitonic quantum ensemble in perovskite-assembly superlattice microcavities
a–c Streak-camera images of SF behavior in a SC sample at 77 K. d–f Corresponding data for CESF in a QDSM sample. g Peak intensity Imax of SF/CESF signals vs. pumping density. The dots represent experimental data and the lines represent theoretical simulations. h Power dependences of radiative time tr. As shown in g, h, the CESF effect in the QDSM exhibits an obvious pumping threshold. Here, Nph represents the threshold density of stimulated photon amplification in the QDSM.
