为了提高掺杂染料的胆甾相液晶的激光效率,通过采用电击摩擦处理来改善染料掺杂胆甾相液晶内部分子的排列,结果表明对于不同厚度的胆甾相液晶样品,其内部分子排列的改善都能提高其输出激光效率,且样品越厚,经过电击摩擦后激光效率提高的倍数越大。这是因为在没有经过电击摩擦处理前,胆甾相液晶分子因不能理想排列而形成缺陷,造成光散射,降低激光效率。且样品越厚,其内部缺陷越多,光散射引起的损耗也越大,对激光效率的降低越严重。经过处理后,内部分子排列得到大幅改善,损耗极大降低,激光效率被提高,且电击摩擦对厚的胆甾相液晶样品内部分子排列的改善更显著,因此经过电击摩擦后,厚的样品的激光效率提高的更大。 In order to improve the laser efficiency of the dye-doped cholesteric liquid crystal, the arrangement of molecules in the dye-doped cholesteric liquid crystal is improved by using the electric shock rubbing treatment. The results show that for the cholesteric liquid crystal samples with different thicknesses, the internal molecular arrangement Improvement can improve the output laser efficiency, and the thicker the sample, the greater the multiple of the laser efficiency after electric shock friction. This is because the cholesteric liquid crystal molecules form defects before they are subjected to electric shock and rubbing, resulting in light scattering and reducing the laser efficiency. And the thicker the sample, the more its internal defects, the greater the loss caused by light scattering, the more serious the reduction of laser efficiency. After treatment, the arrangement of the internal molecules is greatly improved, the loss is greatly reduced, the laser efficiency is improved, and the improvement of the molecular arrangement within the thick cholesteric liquid crystal sample is more pronounced by the electric shock friction. Therefore, after the electric shock friction, the thick sample Laser efficiency is even greater.