液晶与显示2018，Vol.33Issue(1)：14-22,9.DOI:10.3788/YJYXS20183301.0014
纳米颗粒掺杂的聚合物稳定液晶微管随机激光器性能研究
Properties of random laser based on polymer stabilized liquid crystal doped with nanoparticles
摘要
Abstract
This paper investigated the improvement of random lasing properties based on dye-doped polymer stabilized liquid crystals (DDPSLC ) by doping Ag and ZnO nanoparticles (NPs ) with different concentrations in capillaries,in order to expand new applications for this device.At first, DDPSLC samples with different dye doping concentrations were prepared in capillary tubes to select an optimum DDPSLC system for doping NPs.After selecting the optimum DDPSLC,some Ag NPs and ZnO NPs with different concentrations were added into the DDPSLC to investigate the effect on the random lasing properties. The experimental results indicate that the random lasing threshold decreased from 23.2 μJ/pulse to 10.9 μJ/pulse after doping 0.1％ Ag NPs into DDPSLC.As the doping concentration of ZnO NPs increased to 1％,the lasing properties can be also improved due to the scat-tering effect of ZnO NPs,and the lasing threshold of the DDPSLC decreased slightly to 21.2 μJ/pulse. As the doping concentrations of NPs continually increased,some NPs clusters can be observed obvi-ously in capillary samples, which have a negative effect on random lasing emission.In addition, doping Ag NPs with optimum concentrations (0.1％ ) can enhance the random lasing properties more significantly because of the improvement of scattering effect caused by localized surface plasmon reso -nance (LSPR).The random lasing devices based on DDPSLC containing Ag NPs or ZnO NPs will have widely potential applications in LC display,communications and encryption technology.关键词
纳米颗粒/染料激光器/液晶Key words
nanoparticles/dye lasers/liquid crystals分类
信息技术与安全科学引用本文复制引用
陈茂洲,戴海涛,罗丹,张晓东,刘昌龙..纳米颗粒掺杂的聚合物稳定液晶微管随机激光器性能研究[J].液晶与显示,2018,33(1):14-22,9.基金项目
国家自然科学基金(No.61177061 （）
No.61405088 （）
No.0401180018) （）
天津市自然科学基金重点项目(No. 14JCZDJC31400) Supported by National Natural Science Foundation of China (No.61177061 （No. 14JCZDJC31400）
No.61405088 （）
No. 0401180018) （）
Key project of Nature Science Foundation of Tianjin (No.14JCZDJC31400) （No.14JCZDJC31400）
