Emission performance of Ag NF-based random laser with R6G.
(A) Emission spectra of Ag NF-based random laser with R6G (RL-R6G) pumped by 532 nm pulses under different pump power densities. (B) Probability of random lasing vs. different pump power densities. The inset is the photograph of the RL-R6G. (C) Magnifying emission spectra of RL-R6G pumped at 0.42 MW cm−2. (D) Threshold of the system vs. the particle diameter of the scatterers.