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

doi:10.1088/1674-1056/25/9/090301

Abstract This work demonstrates the realization of a lasing in scattering media, which contains dispersive solution of ZnO nanoparticles (NPs) and laser dye 4-dicyanomethylene-2-methyle-6-(p-dimethylaminostyryl)-4H-pyran(DCM) in negative liquid crystals (LCs) that was injected into a cell. The lasing intensity of the dye-doped negative LC laser can be tuned from low to high if the NPs concentration is increased. The tunability of the laser is attributable to the clusters-sensitive feature in effective refractive index of the negative LCs. Such a tunable negative liquid crystal laser can be used in the fabrication of new optical sources, optical communication, and liquid crystal laser displays.

Keywords: random laser negative liquid crystal laser threshold ZnO nanoparticles

Received: 27 May 2016
Accepted manuscript online:

PACS:	03.65.Yz	(Decoherence; open systems; quantum statistical methods)
	03.65.Ta	(Foundations of quantum mechanics; measurement theory)
	03.65.Ud	(Entanglement and quantum nonlocality)

Fund: Project supported by the Doctoral Science Research Start-up Funding of Guizhou Normal University, China (Grant No. 11904-0514162) and the National Natural Science Foundation of China (Grant No. 11474021).

Corresponding Authors: Luogen Deng
E-mail: luogen@bit.edu.cn

Cite this article:

Long-Wu Li(李龙武), Zhen-Zhen Shang(尚真真), Luogen Deng(邓罗根) Random lasing from dye-doped negative liquid crystals using ZnO nanoparticles as tunable scatters 2016 Chin. Phys. B 25 090301

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

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