摘要
在聚合物掺杂液晶中使用正交线偏振光记录了特殊的一维光栅,这种光栅可以由探测光的偏振态控制衍射级的变化,当探测光为水平方向振动的线偏振光时,衍射级中只观察到零级和正一级衍射,无负一级衍射;当探测光为垂直方向振动的线偏振光时,衍射级中只观察到零级和负一级衍射,无正一级衍射,并且衍射级的偏振态与探测光的偏振态相互正交。最后运用琼斯矩阵从理论上解释了该实验现象。
The grating is recorded by two orthogonal linear polarization waves in liquid crystals doped with polymer, which diffracted orders can be controlled by the polarization of the probe beam. When the polarization of the probe beam changes from p-polarized to s-polarized, the grating diffracts s-polarized ＋1 st order and p-polarized --1 st order, respectively. The experiment results are in good agreement with the theoretical expectation on the basis of the Jones calculus.
出处
《液晶与显示》
CAS
CSCD
北大核心
2007年第4期473-476,共4页
Chinese Journal of Liquid Crystals and Displays
基金
北京航空航天大学理学院科研基金(No.0514)
关键词
聚合物掺杂液晶
偏振态
衍射级
琼斯矩阵
liquid crystals doped with polymer
polarization
diffraction orders
Jones calculus
