Theoretical study of the surface anchoring effect on the full leaky waveguide mode of liquid crystal

Ting-ting SUN; Rui YUAN; Zhen-jie LI; Ji-liang ZHU; Hong-yu XING; Wen-jiang YE

doi:10.3788/YJYXS20183306.0483

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Theoretical study of the surface anchoring effect on the full leaky waveguide mode of liquid crystal

Material and Device | 更新时间：2020-07-06

- Theoretical study of the surface anchoring effect on the full leaky waveguide mode of liquid crystal
- Chinese Journal of Liquid Crystals and Displays Vol. 33, Issue 6, Pages: 483-489(2018)
- 作者机构：
  
  河北工业大学理学院, 天津 300401
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20183306.0483
  CLC： O753.2
- Received：23 January 2018，
  
  Accepted：19 March 2018，
  
  Published：2018-06
- 稿件说明：
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Ting-ting SUN, Rui YUAN, Zhen-jie LI, et al. Theoretical study of the surface anchoring effect on the full leaky waveguide mode of liquid crystal[J]. Chinese journal of liquid crystals and displays, 2018, 33(6): 483-489.
DOI：

Ting-ting SUN, Rui YUAN, Zhen-jie LI, et al. Theoretical study of the surface anchoring effect on the full leaky waveguide mode of liquid crystal[J]. Chinese journal of liquid crystals and displays, 2018, 33(6): 483-489. DOI： 10.3788/YJYXS20183306.0483.

摘要

平行排列向列相液晶盒基板表面锚泊能可以影响液晶盒内液晶分子指向矢的分布，光学上将导致液晶导模结构的变化。为了研究基板表面锚泊对液晶全漏导模的影响，首先基于液晶弹性理论推导了液晶指向矢在外加电压下满足的平衡态方程，随后由差分迭代方法数值计算液晶指向矢。最后，基于液晶多层光学理论推导了液晶导波反射率和透射率公式，并通过数值计算得到了平行排列向列相液晶全漏波导反射率

随内角变化的理论曲线。计算结果表明，相对于强锚泊情形（1×10

-3

J/m

），不同锚泊能强度（5×10

-5

J/m

～1×10

-3

J/m

）下的理论曲线会发生左移现象，移动距离与锚泊能强度有关。由曲线移动的距离可以确定液晶盒基板表面锚泊能的强度。该研究为进一步利用光导波技术测量液晶盒基板表面锚泊能强度提供了理论依据。

Abstract

Surface anchoring energy of the substrates can affect the distribution of liquid crystal director in parallel-aligned nematic liquid crystal cell

and the structure of liquid crystal guide mode will be changed in the optics. To investigate the influence of the anchoring energy on the liquid crystal fully leaky guided mode

the equilibrium equation of the liquid crystal director was deduced under the external applied voltage based on the elastic theory of liquid crystal

and then the liquid crystal director was numerically calculated by the differential iteration method. Finally

the formula on reflectivity and transmittance of liquid crystal waveguide was obtained based on the multilayer optics theory of liquid crystal. The theoretical curves of

versus internal degree were calculated in this paper. The results show that the theoretical curves of different anchoring energy strength (5×10

-5

J/m

～1×10

-3

J/m

) will be shifted to the left compared with the strong anchoring (1×10

-3

J/m

) condition

and the moving distance is related to the anchoring energy strength. The anchoring energy strength of substrate surface can be determined by the moving distance of the curves. This study provides a theoretical basis for further measuring the anchoring energy of the substrates in a liquid crystal cell by using optical guided wave technique.

关键词

Keywords

references

YANG D K, WU S T. Fundamentals of Liquid Crystal Devices [M]. 2nd ed. Chichester:John Wiley & Sons, 2014.

唐先柱, 彭增辉, 刘永刚, 等.非对称锚定制备均匀单畴排列铁电液晶器件[J].光学精密工程, 2010, 18(6):1295-1302.

TANG X Z, PENG Z H, LIU Y G, et al . Fabrication of uniform mono-domain alignment ferroelectric liquid crystal devices by asymmetric boundary anchoring[J]. Opt Precision Eng ., 2010, 18(6):1295-1302. (in Chinese)

岱钦, 乌日娜, 杨健, 等.电场作用下染料掺杂液晶器件的激光辐射[J].光学精密工程, 2011, 19(7):1510-1514.

DAI Q, WU R N, YANG J, et al . Laser emission of dye-doped liquid crystal devices under applying voltage[J]. Opt. Precision Eng ., 2011, 19(7):1510-1514. (in Chinese)

KARWIN C K, LIVESEY K L. Microwave properties of twisted and supertwisted nematic liquid crystals with weak anchoring[J]. Liq. Cryst ., 2014, 41(5):707-716.

YUAN R, XING H Y, YE W J. Microwave modulation characteristics of twisted liquid crystals with chiral dopant[J]. AIP Adv ., 2017, 7(1):015101.

章岳光, 李海峰, 刘旭, 等.垂直定向液晶光阀中液晶电光特性的理论分析[J].光学学报, 1999, 19(9):1170-1176.

ZHANG Y G, LI H F, LIU X, et al . Simulation of electric-optical properties of hometropic aligned liquid crystal light valves[J]. Acta Opt. Sin ., 1999, 19(9):1170-1176. (in Chinese)

NIE X Y, WANG H Y, GE G B, et al . Polar anchoring energy measurement of vertically aligned liquid crystal cells[J]. SID Symp. Dig. Tech. Pap ., 2005, 36(1):780-783.

HAO H M, LIU Y Y, ZHANG P, et al . Experimental design to measure the anchoring energy on substrate surface by using the alternating-current bridge[J]. Chin. Phys. B , 2017, 26(8):086102.

BAEK S I, KIM S J, KIM J H. Measurement of anchoring coefficient of homeotropically aligned nematic liquid crystal using a polarizing optical microscope in reflective mode[J]. AIP Adv ., 2015, 26(9):097170.

佘守宪.导波光学物理基础[M].北京:北京交通大学出版社, 2002.

SHE S X. The Basic Physics of Waveguide Optics [M]. Beijing:Beijing Jiaotong University Press, 2002. (in Chinese)

YANG F Z, SAMBLES J R. Guided Mode Studies of Liquid Crystal Layers [M]. Oxford:Taloy and Francis Ltd, 2003:2-3.

谢毓章.液晶物理学[M].北京:科学出版社, 1998.

XIE Y Z. Physics of Liquid Crystal [M]. Beijing:Science Press, 1998. (in Chinese)

BERREMAN D W. Optics in stratified and anisotropic media:4×4-matrix formulation[J]. J. Opt. Soc. Am ., 1972, 62(4):502-510.

王谦, 何赛灵.液晶指向矢分布的模拟和比较研究[J].物理学报, 2001, 50(5):926-932.

WANG Q, HE S L. Simulation and comparison study of liquid crystal director distributions[J]. Acta Phys. Sin ., 2001, 50(5):926-932. (in Chinese)

XING H Y, YE W J, WU N F, et al . Exploration of the sum of flexoelectric coefficients of nematic liquid crystals[J]. Chin. Opt. Lett ., 2012, 10(5):052301.

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