… How, then, can we recognize lasing? The key properties arise from light amplification by
stimulated emission of radiation in a resonator (Box 1), leading to spectral and temporal …

… The difficulties in differentiating lasing from thin films and microresonators from other … “How
to recognize lasing”, which outlines a series of simple experimental tests that allow real lasing …

… Here, we report lasing action from band-edge lattice … and linewidth <1.3 nm) characteristic
of lasing action in the far-field, … responses, we show that lasing is achieved through stimulated …

… lasting argument on how to identify the lasing. Here, we demonstrate thresholdless lasing in
a … This difficulty has resulted in long-lasting arguments [14–16] on how to recognize lasing in …

… for lasing, yet there is considerable debate in the community as to whether lasing is actually
… motivated by the same question (“How to recognize lasing”) in organic semiconductor gain …

… Moreover, we discuss lasing actions at high carrier densities and summarize key rules to
evaluate the lasing actions. Last, we provide an outlook on perovskite-based electrically …

… remain still open, our results clearly show how some of the inconsistencies encountered in
the … for a clear picture of the establishment of the lasing process in small systems, where the …

… that can quantify how close new devices get with respect to their electrical lasing thresholds.
… a response from the community on how to unambiguously recognize lasing, complete with a …

… materials, regardless of how weak it is, thus providing the opportunity to broaden the lasing
wavelengths beyond the fluorescence spectrum. The key problem is how to make this work …

… other than the one on which lasing action (ie, stimulated … with all stimulated emission into the
lasing mode – from taking place … devices, where we now recognize the existence of different …