【摘要】 用液晶分子运动的动力学方程 ,求出了激光诱导向列相液晶分子重新取向的取向角、折射率改变、阈值场强和上升时间的近似表达式。讨论了它们随液晶材料参数、激光强度和激光在液晶中传播方向的变化 ,进行了数值计算。给出了激光能诱导向列相液晶分子重新取向的必备条件 ,得到向列相液晶的各向异性是其分子重新的取向的根本原因。更多还原

【Abstract】 The approximate formula of the laser induced molecular reorientation angle,refractive index change,threshed field strength and rise time in nematic liquid crystal are obtained by means of the hydrodynamic equation of liquid crystal molecule motion.The dependence of the above parameters on the liquid crystal material parameters,laser intensity and its propagation inside liquid crystal is discussed and calculated.The essential condition which laser can induce molecular reorientation in nematic liquid crystal is given.The essential cause of molecular reorientation in nematic liquid crystal is anisotropy of its molecules have been obtained.更多还原