Study of laser action in dye-doped polymer dispersed cholesteric liquid crystal film

	Study of laser action in dye-doped polymer dispersed cholesteric liquid crystal film
	Dai, Q.; J. Wu; X. J. Wu; R. N. Wu; Z. H. Peng and D. Y. Li
	2015
发表期刊	Acta Physica Sinica
卷号	64 期号:1 页码:5
摘要	In this work, laser dye DCM, nematic liquid crystal TEB30A, chiral dopant S-811 and PVA are used to prepare polymer dispersed cholesteric liquid crystal (LC) films by the method of microcapsule. Lasing mechanism and temperature-tunable characteristics of the films are investigated. The diameters of large droplets in the films are about 80 mu m and LC molecules are planar-textured in the droplets when viewed between crossed polarisers through a polarization microscope. Pumped by the 532 nm Nd:YAG laser, narrow linewidths in laser emissions are obtained at 634.5 nm and 680.2 nm, and the linewidths are of 0.25 nm and 0.29 nm, respectively. The device is then compared with a dye-doped cholesteric liquid crystal laser. The wavelength of output laser will blueshift when the temperature of the device is increased, and a 22.8 nm tunable lasing, from 666.7 nm to 643.9 nm, is obtained. Analysis concludes that the lasing mechanism of the film is band-edge lasing, and the emission wavelengths are corresponding to the two edges of the photonic band gap.
收录类别	SCI ; EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55549
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Dai, Q.,J. Wu,X. J. Wu,et al. Study of laser action in dye-doped polymer dispersed cholesteric liquid crystal film[J]. Acta Physica Sinica,2015,64(1):5.
APA	Dai, Q.,J. Wu,X. J. Wu,R. N. Wu,&Z. H. Peng and D. Y. Li.(2015).Study of laser action in dye-doped polymer dispersed cholesteric liquid crystal film.Acta Physica Sinica,64(1),5.
MLA	Dai, Q.,et al."Study of laser action in dye-doped polymer dispersed cholesteric liquid crystal film".Acta Physica Sinica 64.1(2015):5.

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