中文摘要：

从理论上分析了光束自旋角动量使晶体微粒光致旋转的原理。基于MATLAB模拟了不同激光功率下晶体微粒的厚度与其旋转角速度的变化关系,并给出了同一激光功率下不同厚度的晶体微粒获得最大旋转角速度时的理论数据。该结果对实验中如何有效地提高晶体微粒的旋转角速度有一定的指导意义。

英文摘要：

Theoretical analyze the principle of the optical rotation of the crystal particles by angular momentum of beam spin.Based on MATLAB simulations the relationship between the thickness of the crystal particles and its spin angular velocity with different laser power,and show the theoretical data of maximum spin angular velocity on different thickness of the crystal particles which with the same laser power.This result have a certain significant mean to increase the rotation angular velocity of the crystal particle in experiment.