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| 向列相液晶中的耦合自相位调制现象 | |
| 引用本文： | 任常愚,孙秀冬,孙飞,裴延波.向列相液晶中的耦合自相位调制现象[J].液晶与显示,2006,21(2):95-99. |
| 作者姓名： | 任常愚 孙秀冬 孙飞 裴延波 |
| 作者单位： | 1. 黑龙江科技学院,数力系,黑龙江,哈尔滨,150027;哈尔滨工业大学,应用物理系,黑龙江,哈尔滨,150001 2. 哈尔滨工业大学,应用物理系,黑龙江,哈尔滨,150001 3. 黑龙江科技学院,数力系,黑龙江,哈尔滨,150027 |
| 基金项目： | 哈尔滨工业大学跨学科交叉性研究基金资助项目(No.HIT.MD2000,23)，黑龙江省教育厅科学技术研究项目(No.10551273) |
| 摘 要： | 通过实验研究了C60掺杂的向列相液晶(5CB)在低光强下的自相位调制现象。样品经过二波耦合实验之后液晶分子进行一定的取向,这时在水平和竖直偏振光的照射下可观察到明显的自相位调制现象。改变入射光的偏振方向可以看到自相位调制的衍射图样也随之改变,原因就是液晶折射率变化的各向异性。可见,液晶盒中的分子取向与光束的偏振方向有很强的依赖关系。 |
| 关 键 词： | 向列相液晶 非线性光学 自相位调制 |
| 文章编号： | 1007-2780(2006)02-0095-05 |
| 修稿时间： | 2005年8月29日 |
Self-phase Modulation in Nematic Liquid Crystal(5CB) |
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| REN Chang-yu,SUN Xiu-dong,SUN Fei,PEI Yan-bo.Self-phase Modulation in Nematic Liquid Crystal(5CB)[J].Chinese Journal of Liquid Crystals and Displays,2006,21(2):95-99. | |
| Authors: | REN Chang-yu SUN Xiu-dong SUN Fei PEI Yan-bo |
| Abstract: | A self-phase modulation with low beam intensity in C_ 60-doped nematic liquid crystal was investigated experimentally. The liquid crystals molecular can be reorientated by means of two-beam coupling. Then diffraction patterns of self-phase modulation were observed for different incident light of P-polarization and S-polarization obviously. The diffraction patterns depended on the polarization direction of incident He-Ne laser and the results were explained by the strong anisotropy of nematic liquid crystal. As a consequence, the molecular reorientation in the liquid crystal cell is strongly dependent upon the polarization of incident beams. |
| Keywords: | nematic liquid crystal nonlinear optics self-phase modulation |
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