液晶全漏导模的实验研究  

Experimental studies on the full leaky guided mode in liquid crystal

作　　者：叶文江[1,2] 李志广[1] 王欣[1] 张志东[1] 陈国鹰[2] 

机构地区：[1]河北工业大学理学院,天津300401 [2]河北工业大学信息工程学院,天津300401

出　　处：《物理实验》2010年第7期5-8,12,共5页Physics Experimentation

基　　金：河北省自然科学基金项目(No.A2010000004);国家自然科学基金项目(No.60878047);河北省高校重点学科资助项目

摘　　要：夹在2块玻璃基板之间的液晶可以形成波导层,光在其间传播形成导模.通过全漏波导技术,分别对扭曲向列相液晶盒施加不同电压进行测试,得到了依赖于角度变化的反射率(包括偏振保存和偏振转换)实验曲线.液晶指向矢的变化将直接影响反射率变化,验证了液晶全漏波导技术在探索液晶盒内部细微变化方面是有效手段.The liquid crystal layer sandwiched between two glass substrates may be regarded as waveguide layer, in which the guided modes can be formed when a beam of light propagates. By testing a twisted nematic liquid crystal cell with different voltages using the full leaky waveguide tech- nique, different experimental curves of reflectivity （including polarization-conserving signals and po- larization-conversion signals） are obtained. Reflectivity of liquid crystal layer is directly affected by the liquid crystal director, all of which indicates that the full leaky waveguide technique of liquid crystal is a powerful tool in the exploration of subtle changes in liquid crystal cell.

关 键 词：液晶 导模 全漏波导技术 扭曲向列相 指向矢 

分 类 号：O753.2[理学—晶体学] TN252[电子电信—物理电子学]