激光感生液晶相变及其对热光栅弛豫的影响

Laser—induced Phase Transition in Liquid Crystal and Its Effect on Relaxation of Thermal Grating

本文研究了激光感生热光栅的弛豫过程。针对弛豫时间随泵浦光强度变化的现象,讨论了激光感生液晶相变,并且给以比较合理的解释。

The relaxation process of thermal grating was studied. Fromthe dependance of relaxation time on pump intensity, the laser-inducedphase transition in nematic liquid crystal was discussed and explainedreasonably.