Random lasing from dye-doped negative liquid crystals using ZnO nanoparticles as tunable scatters
Li Long-Wu1, Shang Zhen-Zhen2, Deng Luogen2, †, 
(a) Evolution of the emission spectra of dye-doped negative LC solution inside the cell with (0.16 g) ZnO NPs as pump energy increases from 0.71 mJ to 1.98 mJ. (b) Output intensity of the random laser as a function of the incident pump pulse energy obtained from panel (a), where the lasing threshold is 0.71 mJ.
