基于琼斯矩阵的液晶偏振光栅扭曲角及厚度的测量方法

陈琎; 杨程亮; 穆全全; 王启东

doi:10.37188/CJLCD.2020-0336

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基于琼斯矩阵的液晶偏振光栅扭曲角及厚度的测量方法

器件物理及器件制备 | 更新时间：2021-04-28

- 基于琼斯矩阵的液晶偏振光栅扭曲角及厚度的测量方法
- Method for measuring the twist angle and thickness of liquid crystal polarization grating based on Jones matrix
- 液晶与显示 2021年36卷第5期页码：656-662
- 作者机构：
  
  1.中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
  2.中国科学院大学, 北京 100049
- 作者简介：
  
  [ "陈琎(1997-), 男, 河南南阳人, 硕士研究生, 2018年于武汉大学获得学士学位, 主要从事液晶偏振光栅的制备及模拟的研究。E-mail: chenjin18@mails.ucas.ac.cn" ]
  [ "穆全全(1980-), 男, 山西吕梁人, 博士, 研究员, 2010年于中国科学院长春光学精密机械与物理研究所获得博士学位, 主要从事液晶光学调控技术、自适应光学技术和智能光学成像等领域的研究。E-mail: muquanquan@ciomp.ac.cn" ]
  [ "王启东(1987-), 男, 山东临汾人, 博士, 副研究员, 2010年于中国科学院长春光学精密机械与物理研究所获得博士学位, 主要从事液晶光学相控阵及液晶器件的研究。E-mail:qdwang@ciomp.ac.cn" ]
- 基金信息：
  
  国家自然科学基金(61975202);国家自然科学基金(11974345);国家自然科学基金(61805238);国家自然科学基金(11704378);国家自然科学基金(11774342)
- DOI：10.37188/CJLCD.2020-0336
  中图分类号： O753.2;O436.3
- 收稿日期：2020-12-07，
  
  修回日期：2020-12-31，
  
  纸质出版日期：2021-05
- 稿件说明：
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陈琎, 杨程亮, 穆全全, 等. 基于琼斯矩阵的液晶偏振光栅扭曲角及厚度的测量方法[J]. 液晶与显示, 2021,36(5):656-662.

Jin CHEN, Cheng-liang YANG, Quan-quan MU, et al. Method for measuring the twist angle and thickness of liquid crystal polarization grating based on Jones matrix[J]. Chinese journal of liquid crystals and displays, 2021, 36(5): 656-662.
陈琎, 杨程亮, 穆全全, 等. 基于琼斯矩阵的液晶偏振光栅扭曲角及厚度的测量方法[J]. 液晶与显示, 2021,36(5):656-662. DOI： 10.37188/CJLCD.2020-0336.

Jin CHEN, Cheng-liang YANG, Quan-quan MU, et al. Method for measuring the twist angle and thickness of liquid crystal polarization grating based on Jones matrix[J]. Chinese journal of liquid crystals and displays, 2021, 36(5): 656-662. DOI： 10.37188/CJLCD.2020-0336.

摘要

液晶偏振光栅是一种基于几何相位原理的新型光栅器件，可以通过调控液晶光轴的空间分布来实现对入射光相位、偏振态等的调制。传统的液晶偏振光栅在正入射及波段范围较小时可以达到很高的衍射效率，但其在宽波段范围内难以保持很高的衍射效率，大角度入射时衍射效率下降明显。多层扭曲结构的提出使这些问题可以得到解决，但引入了新的问题，如何精准控制扭曲角及厚度的大小。基于此问题，本文提出了一种新型的基于琼斯矩阵的液晶偏振光栅的扭曲角及厚度的测量方法，使用差值拟合的方法消除了由于整个波段折射率变化引起的误差，可以准确得到液晶片的扭曲角和厚度。分析了扭曲液晶片和扭曲液晶偏振光栅的异同，基于扭曲液晶片的测量结果可以得到相同条件下制备的液晶偏振光栅的扭曲角及厚度。实验结果表明：对厚度的测量误差小于2%，对扭曲角的测量误差小于±0.5°。该方法能够快速和方便地实现对扭曲角及厚度的精准测量，有很高的测量准确性及稳定性，并分析了手性剂的浓度和扭曲角之间的关系，对扭曲液晶偏振光栅的制备方法提供了理论依据。

Abstract

Liquid crystal polarization grating is a new type of grating device based on the principle of geometric phase. It can modulate the phase and polarization state of incident light by adjusting the spatial distribution of the optical axis of liquid crystal. Traditional liquid crystal polarization gratings can achieve high diffraction efficiency at normal incidence and a small spectral bandwidth

but it is difficult to maintain a high diffraction efficiency with broad spectral bandwidth

and the diffraction efficiency decreases significantly when incident at a large angle. The proposed multi-layer twisted structure allows these problems to be solved

but introduces a new problem

how to accurately control the twist angle and thickness. Based on this problem

this paper proposes a new method for measuring the twist angle and thickness of a liquid crystal polarization grating based on Jones matrix. The difference fitting method eliminates the error caused by the refractive index change of the entire waveband

and can accurately obtain the twist angle and thickness of the liquid crystal cell. The similarities and differences between the twisted liquid crystal film and the twisted liquid crystal polarization grating are analyzed. Based on the measurement results of the twisted liquid crystal film

the twist angle and thickness of the liquid crystal polarization grating prepared under the same conditions can be obtained. The experimental results show that the thickness measurement error is less than 2%

and the twist angle measurement error is less than ±0.5°. This method can quickly and conveniently realize the accurate measurement of twist angle and thickness

with high measurement accuracy and stability. The relationship between the concentration of the chiral agent and the twist angle is analyzed

which provides a theoretical basis for the preparation method of multi-twist liquid crystal polarization grating.

关键词

Keywords

references

N F YU , F CAPASSO . Flat optics with designer metasurfaces . Nature Materials , 2014 . 13 ( 2 ): 139 - 150 . DOI: 10.1038/nmat3839 http://doi.org/10.1038/nmat3839 .

N TABIRYAN , D ROBERTS , E SERABYN , 等 . Superlens in the skies: liquid-crystal-polymer technology for telescopes . SPIE Newsroom , 2016 . DOI: 10.1117/2.1201601.006317 http://doi.org/10.1117/2.1201601.006317 .

W DUAN , P CHEN , B Y WEI , 等 . Fast-response and high-efficiency optical switch based on dual-frequency liquid crystal polarization grating . Optical Materials Express , 2016 . 6 ( 2 ): 597 - 602 . DOI: 10.1364/OME.6.000597 http://doi.org/10.1364/OME.6.000597 .

C PROVENZANO , P PAGLIUSI , G CIPPARRONE . Highly efficient liquid crystal based diffraction grating induced by polarization holograms at the aligning surfaces . Applied Physics Letters , 2006 . 89 ( 12 ): 121105 DOI: 10.1063/1.2355456 http://doi.org/10.1063/1.2355456 .

H H CHENG , A K BHOWMIK , P J BOS . Analysis of a dual-twist Pancharatnam phase device with ultrahigh-efficiency large-angle optical beam steering . Applied Optics , 2015 . 54 ( 34 ): 10035 - 10043 . DOI: 10.1364/AO.54.010035 http://doi.org/10.1364/AO.54.010035 .

X XIANG , J KIM , R KOMANDURI , 等 . Nanoscale liquid crystal polymer Bragg polarization gratings . Optics Express , 2017 . 25 ( 16 ): 19298 - 19308 . DOI: 10.1364/OE.25.019298 http://doi.org/10.1364/OE.25.019298 .

X XIANG , J KIM , M J ESCUTI . Bragg polarization gratings for wide angular bandwidth and high efficiency at steep deflection angles . Scientific Reports , 2018 . 8 ( 1 ): 7202 DOI: 10.1038/s41598-018-25535-0 http://doi.org/10.1038/s41598-018-25535-0 .

C OH , M J ESCUTI . Achromatic diffraction from polarization gratings with high efficiency . Optics Letters , 2008 . 33 ( 20 ): 2287 - 2289 . DOI: 10.1364/OL.33.002287 http://doi.org/10.1364/OL.33.002287 .

XIANG X, ESCUTI M J. Numerical modeling of polarization gratings by rigorous coupled wave analysis[C]// Proceedings of SPIE 9769, Emerging Liquid Crystal Technologies XI . San Francisco, California, United States: SPIE, 2016, 9769: 976918.

J Y ZOU , T ZHAN , J H XIONG , 等 . Broadband wide-view Pancharatnam-Berry phase deflector . Optics Express , 2020 . 28 ( 4 ): 4921 - 4927 . http://www.researchgate.net/publication/338905919_Broadband_wide-view_Pancharatnam-Berry_phase_deflector http://www.researchgate.net/publication/338905919_Broadband_wide-view_Pancharatnam-Berry_phase_deflector .

KIM J, OH C, ESCUTI M J, et al . Wide-angle nonmechanical beam steering using thin liquid crystal polarization gratings[C]// Proceedings of SPIE 7093, Advanced Wavefront Control : Methods , Devices , and Applications VI . San Diego, California, United States: SPIE, 2008, 7093: 709302.

J N EAKIN , Y H XIE , R A PELCOVITS , 等 . Zero voltage Freedericksz transition in periodically aligned liquid crystals . Applied Physics Letters , 2004 . 85 ( 10 ): 1671 - 1673 . DOI: 10.1063/1.1789578 http://doi.org/10.1063/1.1789578 .

刘春杰 , 彭增辉 , 李松振 , 等 . 非等光强正交圆偏振光对液晶偏振光栅衍射特性的影响 . 液晶与显示 , 2018 . 33 ( 2 ): 144 - 149 . http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20183302.0144 http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20183302.0144 .

C J LIU , Z H PENG , S Z LI , 等 . Diffraction properties of liquid crystal polarization gratings with orthogonal circular polarization and different intensities waves . Chinese Journal of Liquid Crystals and Displays , 2018 . 33 ( 2 ): 144 - 149 . http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20183302.0144 http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20183302.0144 .

A C GRIFFIN , J F JOHNSON , R S PORTER , 等 . Liquid Crystals and Ordered Fluids , : New York Plenum Press , 1970 .

S T WU , D K YANG . Reflective Liquid Crystal Displays , : New York Wiley , 2001 .

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