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

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

中国物理B ›› 2016, Vol. 25 ›› Issue (9): 90301-090301.doi: 10.1088/1674-1056/25/9/090301

• SPECIAL TOPIC—Physical research in liquid crystal • 上一篇下一篇

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

Long-Wu Li(李龙武), Zhen-Zhen Shang(尚真真), Luogen Deng(邓罗根)

1. School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, China;
2. School of Physics, Beijing Institute of Technology, Beijing 100081, China

收稿日期:2016-05-27 出版日期:2016-09-05 发布日期:2016-09-05
通讯作者: Luogen Deng E-mail:luogen@bit.edu.cn
基金资助:
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).

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

Long-Wu Li(李龙武)¹, Zhen-Zhen Shang(尚真真)², Luogen Deng(邓罗根)²

1. School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, China;
2. School of Physics, Beijing Institute of Technology, Beijing 100081, China

Received:2016-05-27 Online:2016-09-05 Published:2016-09-05
Contact: Luogen Deng E-mail:luogen@bit.edu.cn
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: random laser, negative liquid crystal, laser threshold, ZnO nanoparticles

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.

Key words: random laser, negative liquid crystal, laser threshold, ZnO nanoparticles

中图分类号: (Decoherence; open systems; quantum statistical methods)

03.65.Yz

03.65.Ta (Foundations of quantum mechanics; measurement theory) 03.65.Ud (Entanglement and quantum nonlocality)

李龙武, 尚真真, 邓罗根. Random lasing from dye-doped negative liquid crystals using ZnO nanoparticles as tunable scatters[J]. 中国物理B, 2016, 25(9): 90301-090301.

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[J]. Chin. Phys. B, 2016, 25(9): 90301-090301.

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

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

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