向列相液晶中高阶衍射图像的特性

兰民; 任常愚

doi:10.3788/YJYXS20112604.0443

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向列相液晶中高阶衍射图像的特性

材料物理和化学 | 更新时间：2020-08-12

- 向列相液晶中高阶衍射图像的特性
- Characteristics of Higher-Order Diffraction Image Based on Photorefractive Grating in Nematic Liquid Crystals
- 液晶与显示 2011年26卷第4期页码：443-447
- 作者机构：
  
  1. 长春工业大学基础科学学院, 吉林长春 130012
  2. 黑龙江科技学院理学院, 黑龙江哈尔滨 150027
- 作者简介：
- 基金信息：
  
  黑龙江省自然科学基金资助项目(No.A200915)();黑龙江省教育厅科学技术研究资助项目(No.12511493)()
- DOI：10.3788/YJYXS20112604.0443
  中图分类号： O753+.2
- 收稿日期：2010-02-28，
  
  修回日期：2011-04-11，
  
  网络出版日期：2011-08-20，
  
  纸质出版日期：2011-08-20
- 稿件说明：
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兰民, 任常愚. 向列相液晶中高阶衍射图像的特性[J]. 液晶与显示, 2011,26(4): 443-447

LAN Min, REN Chang-yu. Characteristics of Higher-Order Diffraction Image Based on Photorefractive Grating in Nematic Liquid Crystals[J]. , 2011,26(4): 443-447
兰民, 任常愚. 向列相液晶中高阶衍射图像的特性[J]. 液晶与显示, 2011,26(4): 443-447 DOI： 10.3788/YJYXS20112604.0443.

LAN Min, REN Chang-yu. Characteristics of Higher-Order Diffraction Image Based on Photorefractive Grating in Nematic Liquid Crystals[J]. , 2011,26(4): 443-447 DOI： 10.3788/YJYXS20112604.0443.

摘要

研究了垂直排列C

掺杂的向列相液晶(5CB)记录光折变光栅衍射像的特性。利用二波耦合实验

以较小入射角的信号光束与参考光束在样品中干涉并形成光折变光栅。在远离样品的观察屏上可观察到高阶衍射像。对衍射像进行分析发现

信号光一侧的二阶衍射像被放大

而在参考光一侧的负一阶衍射虽没放大

但产生了180旋转

理论分析与实验观察结果非常吻合。

Abstract

The characteristics of the higher-order diffraction images of a photorefractive grating recorded in cells of homeotropically aligned nematic liquid crystal (5CB) doped with sensitizer C

were studied. In two-beam coupling (TBC) experiments

one incident signal beam is interfered with a mutually coherent reference beam within the sample at a small incident angle and the photorefractive gratings formed. The higher-order diffraction images were observed on the screen behind the sample. It was shown that the image corresponding to the second order diffraction image which is located at the side of the signal beam is magnified

and the image corresponding to the negative first order which is located at the side of the reference beam is 180 rotated. The theoretical analyses are in good agreement with the experimental results.

关键词

Keywords

references

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