Random lasing from dye-doped negative liquid crystals using ZnO nanoparticles as tunable scatters

Li Long-Wu¹, Shang Zhen-Zhen², Deng Luogen^{2, †,}

(a) Evolution of the emission spectra of dye-doped negative LC solution inside the cell with (0.08 g) ZnO NPs as the pump energy increases from 0.086 mJ to 2.11 mJ. (b) Peak intensity of emission spikes as a function of pump pulse energy obtained from panel (a).