激光与光电子学进展, 2020, 57 (3): 030501, 网络出版: 2020-02-17   

级联液晶偏振光栅的衍射特性分析 下载: 1107次

Diffraction Characteristics Analysis of Cascaded Liquid Crystal Polarization Gratings
作者单位
长春理工大学电子信息工程学院, 吉林 长春 130022
摘要
液晶偏振光栅(LCPG)可实现光束非机械偏转,LCPG在实际制备中液晶分子填充不均匀会导致液晶层厚度不均匀,从而使光通过级联LCPGs有效区域的同一位置时的衍射效率降低。为了提高级联LCPGs的衍射效率,基于琼斯矩阵理论分析了驱动电压对LCPG衍射效率的影响,利用三级级联LCPGs构建光束偏转实验装置,通过施加不同驱动电压来测量光斑能量,得到衍射效率随电压的变化关系曲线。实验结果表明,当电压在2.0~2.4 V范围内时,+1级衍射效率达到0.80~0.84。
Abstract
Liquid crystal polarization grating (LCPG) can achieve non-mechanical beam steering. During the actual preparation of LCPGs, the filling of liquid crystal molecules is not uniform, resulting in uneven liquid crystal layer thickness, which reduces the diffraction efficiency of light through the same position of the effective region of cascaded LCPG. This study analyzes the influence of driving voltage on the diffraction efficiency of LCPG based on Jones matrix theory to improve the diffraction efficiency of cascaded LCPGs. An experimental device is constructed for beam deflection using a three-stage cascaded LCPGs. The spot energy is measured by applying varying driving voltages, and the relationship between the diffraction efficiency and the voltage is obtained. The experimental results show that the +1st-order diffraction efficiency reaches 0.80-0.84 when the voltage is in the range of 2.0-2.4 V.

王丽娜, 李明秋, 王春阳, 史红伟, 牛启凤. 级联液晶偏振光栅的衍射特性分析[J]. 激光与光电子学进展, 2020, 57(3): 030501. Li'na Wang, Mingqiu Li, Chunyang Wang, Hongwei Shi, Qifeng Niu. Diffraction Characteristics Analysis of Cascaded Liquid Crystal Polarization Gratings[J]. Laser & Optoelectronics Progress, 2020, 57(3): 030501.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!