Figure 3
From: Temporal profiles for measuring threshold of random lasers pumped by ns pulses
Transition in spectral and temporal features of emission. (a,b) The frequency-domain spectrum (a) and the temporal profile signal (b) from the Ag-nanowire-based dual-regime RL with R6G in a concentration of C R6G = 2.1 mM under different pump power densities of 0.14 MW/cm2 (black line), 1.63 MW/cm2 (red line), 8.76 MW/cm2 (blue line), and 18.75 MW/cm2 (olive line). (c) Variation of delay time (bottom) and rise time (top) with pump power density. Four colored data points coordinate with the selected data in a and b while other points are gray. (d) The intensity and bandwidth of emission at 573.99 nm change with the pump power density.
