Bragg reflection and optical rotatory power of cholesteric and blue phase liquid crystal

DOU Hu; YU Ya-nan; MA Hong-mei; SUN Yu-bao

doi:10.3788/YJYXS20153003.0381

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Bragg reflection and optical rotatory power of cholesteric and blue phase liquid crystal

Material Physics & Chemistry | 更新时间：2020-08-12

- Bragg reflection and optical rotatory power of cholesteric and blue phase liquid crystal
- Chinese Journal of Liquid Crystals and Displays Vol. 30, Issue 3, Pages: 381-386(2015)
- 作者机构：
  
  河北工业大学应用物理系, 天津 300401
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20153003.0381
  CLC： TN141
- Received：04 September 2014，
  
  Revised：22 October 2014，
  
  Published：05 June 2015
- 稿件说明：
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窦虎, 于亚楠, 马红梅, 孙玉宝. 胆甾相与蓝相液晶的布拉格反射和旋光能力研究[J]. 液晶与显示, 2015,30(3): 381-386

DOU Hu, YU Ya-nan, MA Hong-mei, SUN Yu-bao. Bragg reflection and optical rotatory power of cholesteric and blue phase liquid crystal[J]. , 2015,30(3): 381-386
窦虎, 于亚楠, 马红梅, 孙玉宝. 胆甾相与蓝相液晶的布拉格反射和旋光能力研究[J]. 液晶与显示, 2015,30(3): 381-386 DOI： 10.3788/YJYXS20153003.0381.

DOU Hu, YU Ya-nan, MA Hong-mei, SUN Yu-bao. Bragg reflection and optical rotatory power of cholesteric and blue phase liquid crystal[J]. , 2015,30(3): 381-386 DOI： 10.3788/YJYXS20153003.0381.

摘要

采用时域有限差分法(FDTD)研究了胆甾相液晶与蓝相液晶的旋光能力.首先计算了圆偏振光在平面态胆甾相液晶与蓝相液晶中的布拉格反射现象

从晶格结构和分子排列的角度对模拟结果做了讨论

研究了液晶折射率和螺距对布拉格反射现象的影响.其次研究了胆甾相与蓝相液晶夹在两正交偏振片间的漏光情况

用液晶的旋光能力对二者的相似和不同的现象进行了解释.

Abstract

The Bragg reflection and optical rotatory power of cholesteric liquid crystal (ChLC) and blue phase liquid crystal (BPLC) are studied using finite-difference time-domain (FDTD) method. Firstly

the Bragg reflection of ChLC and BPLC is calculated

and the simulation results are discussed from the aspects of lattice structures and molecular arrangement. The effect of refractive index and pitch of liquid crystal on the Bragg reflection is also studied. The light leakage of the ChLC and BPLC sandwiched by the crossed polarizers is calculated

and the similar and different phenomena are analyzed by the optical rotatory power of liquid crystal.

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references

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