Influence of physical parameters on the properties of liquid crystal polarization grating

Yu-nuo CHEN; Wei-cheng LUO; Hong-jie YAN; Lu-jian CHEN

doi:10.37188/YJYXS20203512.1222

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Influence of physical parameters on the properties of liquid crystal polarization grating

Device Preparation & Detection | 更新时间：2020-12-04

- Influence of physical parameters on the properties of liquid crystal polarization grating
- Chinese Journal of Liquid Crystals and Displays Vol. 35, Issue 12, Pages: 1222-1233(2020)
- 作者机构：
  
  1.厦门大学电子科学与技术学院, 福建厦门 361005
  2.厦门城市职业学院, 福建厦门 361008
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(61675172)
- DOI：10.37188/YJYXS20203512.1222
  CLC： TP394.1;TH691.9
- Received：03 July 2020，
  
  Revised：20 August 2020，
  
  Accepted：20 August 2020，
  
  Published：2020-12
- 稿件说明：
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Yu-nuo CHEN, Wei-cheng LUO, Hong-jie YAN, et al. Influence of physical parameters on the properties of liquid crystal polarization grating[J]. Chinese journal of liquid crystals and displays, 2020, 35(12): 1222-1233.
DOI：

Yu-nuo CHEN, Wei-cheng LUO, Hong-jie YAN, et al. Influence of physical parameters on the properties of liquid crystal polarization grating[J]. Chinese journal of liquid crystals and displays, 2020, 35(12): 1222-1233. DOI： 10.37188/YJYXS20203512.1222.

摘要

随着现代社会对数据存储容量和信息处理速度要求的不断提高，更加小型化、集成化的平面光学器件受到了广泛的关注。作为一种典型的可以进行几何相位调制的液晶器件，液晶偏振光栅具有衍射效率高、偏转角度大、响应时间短等优势，已经展现出了非常大的应用潜力。然而，目前液晶偏振光栅在设计制备过程中还存在许多与电光性能相关的问题，限制其走向实际应用。实现液晶偏振光栅衍射特性的调控需要满足一些先决条件。本文通过选取合适液晶偏振光栅的弹性连续体模型，主要研究改变液晶材料的物性参数如弹性常数、介电常数等在强、弱两种锚定条件下对临界盒厚和阈值电压的影响。并给出了针对不同应用要求的液晶偏振光栅的制备过程中，关于液晶材料物性参数选择的理论参考依据。

Abstract

With the demand on increasing data storage capacity and information processing speed in the modern society

more compact and integrated planar optical devices have received widespread attention. As one of the typical liquid crystal (LC) devices to modulate geometric phase

LC polarization gratings have shown great application potential in optical systems due to the advantages such as high diffraction efficiency

large deflection angle

and short response time

etc. However

some of the problems related to electro-optical performances have not yet been overcome in the current manufacturing process of LC polarization gratings

limiting its practical application. The control of diffraction characteristics of LC polarization gratings is subject to certain preconditions. In this work

by optimizing the elastic continuum model used to analyze the LC polarization grating

the influence of LC physical parameters (elastic constant

dielectric constant

etc.) on the critical cell thickness and threshold voltage

under the strong and weak anchoring conditions were investigated

providing the theoretical support for the selection of LC materials with suitable physical parameters for LC polarization gratings toward different applications.

关键词

Keywords

references

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