Advantages of Highly Ordered Polymer-Dyes for Lasing in Chiral Nematic Liquid Crystals
Advantages of Highly Ordered Polymer-Dyes for Lasing in Chiral Nematic Liquid Crystals
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DOI：
10.1143/jjap.43.631
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发表时间：
2004-02
影响因子：
1.5
通讯作者：
K. Shin;F. Araoka;Byoungchoo Park;Y. Takanishi;K. Ishikawa;Zhengguo Zhu;T. Swager;H. Takezoe
中科院分区：
文献类型：
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作者：
K. Shin;F. Araoka;Byoungchoo Park;Y. Takanishi;K. Ishikawa;Zhengguo Zhu;T. Swager;H. Takezoe
我们研究了染料掺杂手性向列相液晶（N* LC）中的激光发射。为了证明使用聚合物染料（其沿N* LC的局部指向矢沿着高度排列）优于商业小分子染料（例如4-（二氰基亚甲基）-2-甲基-6-（4-二甲基氨基苯乙烯基）-4H-吡喃（DCM））的优点，已经使用聚合物染料掺杂的N*LC和DCM掺杂的N*LC盒进行了荧光光谱、激光条件和有序参数的比较研究。通过考虑模式密度和序参量，精确地模拟了两种染料的右旋和左旋圆偏振荧光光谱。这些结果表明，N* LC中的聚合物染料提供的更大的排列为激光发射提供了理想的条件。
We have studied lasing in dye-doped chiral nematic liquid crystals (N*LCs). To demonstrate the advantages of using a polymer dye, that is highly aligned along the local director of N*LCs, over commercial small molecule dyes such as 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostryl)-4H-pyran (DCM), comparative studies of the fluorescence spectra, lasing conditions and order parameters have been made using polymer-dye doped N*LC and DCM-doped N*LC cells. Right- and left-circularly polarized fluorescence spectra for both dyes were accurately simulated by taking account of their density of modes and order parameters. These results indicate that the greater alignment afforded by the polymer dye in N*LCs provides ideal conditions for lasing.