二维微管中聚合物分散液晶的随机激光行为研究THE STUDY OF RANDOM LASING BEHAVIOR FROM POLYMER DISPERSED LIQUID CRYSTAL IN 2D CAPILLARY
安妮拉·艾哈迈德,戴海涛
摘要(Abstract)：
聚合物分散液晶具有可调控的光散射能力，在光开关、智能窗户等领域具有广泛的应用前景。本文主要研究在微管中制备的聚合物分散液晶的随机激光特性，重点研究了不同的聚合物体系以及不同的微管直径中随机激光的出射特性。实验发现，直径更小的微管能够实现较低阈值和更窄的线宽的随机激光辐射。本实验的结果为进一步提升微管随机激光性能，提升集成光路中激光光源的性能提供帮助。
关键词(KeyWords)： 随机激光;聚合物分散液晶;微管激光
基金项目(Foundation):
作者(Author): 安妮拉·艾哈迈德,戴海涛
参考文献(References)：
- [1] LAWANDY N M,SSLSCHANDRAN R M,LGOMES A S,et.al.Laser action in strongly scattering media[J].Nature,1994,368(6470):436-438.
- [2] CAO H,ZHAO Y G,HO S T,et al.Random laser action in semiconductor powder[J].Phys.Rev.Lett.,1999:2278-2281.
- [3] HARADA H,NAKATSU M,NAITO H.Emission gain narrowing in dye-doped polymer dispersed liquid crystals[J].J.Appl.Phys.,2005,44(7L):L915.
- [4] STRANGI G,FERJANI S,BARNA V,et al.Random lasing and weak localization of light in dye-doped nematic liquid crystals[J].Opt.Express,2006,14(17):7337-7744.
- [5] FERJANI S,BARNA V,LUCA A D,et al.Random lasing in freely suspended dye-doped nematic liquid crystals[J].Opt.Lett.,2008,33(6):557-559.
- [6] SUTHERLAND R L,NATARAJAN L V,TONDIGLIA V P,et al.Bragg grating in an acrylate polymer consisting of periodic polymer dispersed liquid crystal planes[J].Chem.Mater.,1993,5:1533-1538.