Figure 4
From: Temporal profiles for measuring threshold of random lasers pumped by ns pulses
Threshold features of delay time and rise time in different random systems. Plots are the results from three systems, S2, S3, and S4, with varying C R6G concentrations of 0.1 mM, 10.4 mM, and 18.8 mM, respectively. (a,d,g) The variation of delay time (bottom) and rise time (top) versus pump power density of S2 (a), S3 (d), and S4 (g); (b,e,h) The variation of intensity and linewidth versus pump power density of S2 (b), S3 (e), and S4 (h); (c,f,i) The normalized frequency domain spectrum of S2 (c), S3 (f), and S4 (i).
