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| 向列相液晶中衍射光束脉冲现象的研究 | |
| 引用本文： | 韩仁学,任常愚,孙飞. 向列相液晶中衍射光束脉冲现象的研究[J]. 黑龙江大学自然科学学报, 2006, 23(1): 68-71 |
| 作者姓名： | 韩仁学 任常愚 孙飞 |
| 作者单位： | 1. 中国科学院,西安光学精密机械研究所,陕西,西安,71000;黑龙江科技学院,数力系,黑龙江,哈尔滨,150027 2. 黑龙江科技学院,数力系,黑龙江,哈尔滨,150027;哈尔滨工业大学,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： | 黑龙江省教育厅科学技术研究项目 |
| 摘 要： | 利用双光束耦合实验研究了C60掺杂垂直排列向列相液晶(5CB)中全息光栅衍射信号的脉冲现象,实验上发现没有相干光预照与没有相干光预照的样品的衍射信号表现出不同的脉冲现象。给出了液晶分子取向力矩平衡方程从理论上解释了这种现象。 |
| 关 键 词： | 向列相液晶 双光束耦合 脉冲现象 |
| 文章编号： | 1001-7011(2006)01-0068-04 |
| 修稿时间： | 2005-10-20 |
Studies of pulsation feature of the diffraction beam in a nematic liquid crystals |
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| HAN Ren-xue,REN Chang-yu,SUN Fei. Studies of pulsation feature of the diffraction beam in a nematic liquid crystals[J]. Journal of Natural Science of Heilongjiang University, 2006, 23(1): 68-71 | |
| Authors: | HAN Ren-xue REN Chang-yu SUN Fei |
| Abstract: | Pulsation feature of the diffraction beam in the phase-shifted refractive index grating under an electric field was studied in C_ 60-doped nematic liquid crystal by two-beam coupling experiment. Different Pulsation feature for pre-irradiation and non pre-irradiation sample were observed in experiment. In order to investigate these distinct properties, a molecular equilibrium equation of torques and a director distribution model was presented. By means of the equation and scheme of molecular reorientation, the pulsation feature of the diffraction beam was illustrated qualitatively. |
| Keywords: | nematic liquid crystal two-beam coupling pulsation feature |
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