Characteristics of twisted nematic liquid crystal terahertz phase modulator

Rui GAO; Ri-na WU; Yun-he SONG; Jia-qi LU; Qin DAI

doi:10.37188/CJLCD.2020-0258

您当前的位置：

首页 >

文章列表页 >

Characteristics of twisted nematic liquid crystal terahertz phase modulator

Device Physics and Device Preparation | 更新时间：2021-03-23

- Characteristics of twisted nematic liquid crystal terahertz phase modulator
- Chinese Journal of Liquid Crystals and Displays Vol. 36, Issue 3, Pages: 379-388(2021)
- 作者机构：
  
  沈阳理工大学理学院, 辽宁沈阳 110159
- 作者简介：
- 基金信息：
  
  Liaoning Province Higher Education Innovative Talent Support Plan;The Natural Science Foundation of Liaoning Province
- DOI：10.37188/CJLCD.2020-0258
  CLC： O753.2;TP391
- Received：29 September 2020，
  
  Accepted：23 October 2020，
  
  Published：2021-03
- 稿件说明：
移动端阅览
Rui GAO, Ri-na WU, Yun-he SONG, et al. Characteristics of twisted nematic liquid crystal terahertz phase modulator[J]. Chinese journal of liquid crystals and displays, 2021, 36(3): 379-388.
DOI：

Rui GAO, Ri-na WU, Yun-he SONG, et al. Characteristics of twisted nematic liquid crystal terahertz phase modulator[J]. Chinese journal of liquid crystals and displays, 2021, 36(3): 379-388. DOI： 10.37188/CJLCD.2020-0258.

摘要

设计了扭曲向列相液晶太赫兹相位调制器，利用琼斯矩阵模拟分析了不同扭曲角30°、45°、90°对相位调制特性的影响。得出扭曲角越小其相位延迟量越高，并且对光的利用率越高。进一步分析电压效应，结果表明同一频率下加大电压可使透过率增大，相位延迟量减小。当扭曲角为30°，选择液晶材料为LC1825，液晶盒厚度为250 μm设计了透射型相位调制器，在1.2 THz频率处获得126°的相位延迟。为提高相位调制量设计了结构参数与透射型相同的反射型太赫兹相位调制器，在1.2 THz下得到相位延迟量为270°，因反射型结构较透射型增加了一倍的有效光程，相位调制量大幅提高。

Abstract

A terahertz phase modulator based on twisted nematic liquid crystal is designed

and the influences of twist angles of 30°

45°

and 90° on the phase modulation characteristics are analyzed using Jones matrix simulation. The results show that a smaller twist angle leads to the higher phase retardation and larger light utilization efficiency. In addition

with the increase of the voltage at the same frequency

the transmittance increases and the phase retardation decreases. When LC1825 liquid crystal with a twist angle of 30° is injected into a liquid crystal cell with a thickness of 250 μm

the transmission-based terahertz phase modulator is built. The phase retardation of 126° is obtained at a frequency of 1.2 THz. In order to maximize the phase modulation

a reflection-based terahertz phase modulator is also structured

which has similar structural parameters as the transmission-based terahertz phase modulator. As a result

the phase retardation reaches 270° at 1.2 THz

which is much larger than the transmission-based one due to the double effective optical length.

关键词

Keywords

references

冀允允. 太赫兹液晶相位调制器件研究[D]. 天津: 南开大学, 2018.

JI Y Y. Research on terahertz phase modulation devices based on liquid crystals[J]. Tianjin: Nankai University, 2018. (in Chinese)

石爽. 基于液晶调谐的太赫兹超材料滤波器研究[D]. 哈尔滨: 哈尔滨理工大学, 2017.

SHI S. Research on tunable terahertz metamaterial filter based on liquid crystal[D]. Harbin: Harbin University of Science and Technology, 2017.(in Chinese)

崔轩. 基于向列相液晶的太赫兹波调制器的结构设计及其性能研究[D]. 哈尔滨: 哈尔滨工业大学, 2014.

CUI X. The Research on structure and performance of nematic liquid crystal terahertz modulators[J]. Harbin: Harbin Institute of Technology, 2014. (in Chinese)

刘岩, 范飞, 陈赛, 等. 外场下向列相液晶太赫兹光学性质[J]. 光学学报, 2016, 36(2): 3346-3348.

LIU Y, FAN F, CHEN S, et al . Terahertz optical properties of nematic liquid crystals depended on different external fields[J]. Acta Optica Sinica , 2016, 36(2): 3346-3348. (in Chinese)

RYOUTA I, TOSHIAKI N, MASANORI O, et al. THz wave transmission properties of lc composite membrane films[J]. Molecular Crystals and Liquid Crystals , 2015, (1): 144-145.

CHEN Z Z, JIANG L J, MA H. Calculation on frequency and temperature properties of birefringence of nematic liquid crystal5CB in terahertz band[J]. Chemical Physics Letters , 2016, 14(3): 3-5.

冀允允, 范飞, 于建平, 等. 太赫兹液晶可调谐功能器件[J]. 中国激光, 2019, 46(6): 1-2.

JI Y Y, FAN F, YU J P, et al. Terahertz tunable divices based on liquid crystal[J]. Chinese Journal of Lasers , 2019, 46(6): 1-2. (in Chinese)

RAFAL W, NICO V, OLAF K, et al. Liquid crystal based electrically switchable Bragg structure for THz waves[J]. Optics Express , 2009, 17(9): 7378-7379.

ANUP K S, CHANS Y, OSAMU W, et al. Twisted nematic liquid crystal based terahertz phase shifter with crossed indium tin oxide finger type electrodes[J]. IEEE Transactions on Terahertz Science and Technology , 2019, 9(4): 399-401.

YANG J, WANG P, GAO S, et al. Tunable terahertz transmission properties of double-layered metal hole-loop arrays using nematic liquid crystal[J]. Springer Nature , 2019, 2(18): 634-736.

LI X F, NICHOLAS T, MIKE P, et al. High-birefringence nematic liquid crystal for broadband THz applications[J]. Liquid Crystals , 2016, 2(9): 1-2.

李振杰, 袁瑞, 孙婷婷, 等. 挠曲电效应对液晶微波相位调制的影响[J]. 液晶与显示, 2018, 33(1): 24-25.

LI Z J, YUAN R, SUN T T, et al. Influence of flexoelectric effect on phase modulation of liquid the microwave crystal[J]. Chinese Journal of Liquid Crystals and Displays, 2018, 33(1): 24-25.

李颖奎, 齐冀, 张洁, 等. 基于液晶空间光调制器的变倍率激光扩束技术研究[J]. 液晶与显示, 2018, 33(9): 765-766.

LI Y K, QI J, ZHANG J, et al. Laser beam expanding technology based on liquid crystal spatial light modulator[J]. Chinese Journal of Liquid Crystals and Displays , 2018, 33(9): 765-766.

王磊, 肖芮文, 葛士军, 等. 太赫兹液晶材料与器件研究进展[J]. 物理学报, 2019, 68(8): 2.

WANG L, XIAO R W, GE S J, et al . Research progress of terahertz liquid crystal materials and devices[J]. Acta Physica Sinica , 2019, 68(8): 2. (in Chinese)

NICO V, MOHAMMAD K S, BENEDIKT S, et al. THz properties of nematic liquid crystals[J]. Springer , 2010, 31(9): 1313.

TSAI T R, CHEN C Y, PAN R P, et al. Electrically controlled room temperature terahertz phase shifter with liquid crystal[J]. IEEE Microwave and Wireless Components Letters, 2004, 14(2): 77-79.

HSIEH C F, PAN R P. Voltage-controlled liquid-crystal terahertz phase shifter and quarter-wave plate[J]. Optics Letters , 2006, 31(8): 1112-1114.

WU Y, RUAN X Z, CHEN C H, et al . Graphene/liquid crystal based terahertz phase shifters[J]. Optics Express , 2013, 21(18): 21395-21402.

CHODOROW U, PARKA J, STRZEZYSZ O, et al. Liquid crystal phase shifter for THz radiation with cholesteric liquid crystal[J]. Molecular Crystals and Liquid Crystals , 2017, 65(7): 51-55.

陈怀新, 魏宏刚, 陈祯培, 等. 采用液晶空间光调制器的可控性阵列菲涅耳波带片[J]. 光子学报, 2001, 30(5): 562-563.

CHEN H X, WEI H G, CHEN Z P, et al. A controllable array Frensel zone plates using liquid crystal spatial light modulator[J]. Acta Photonica Sinica , 2001, 30(5): 562-563. (in Chinese)

LU K H, BAHAA E A, SALE H. Theory and design of the liquid crystal TV as an optical spatial phase modulator[J]. Optical Engineering , 1990, 29(3): 240-241.

刘永军, 连佳, 胡立发, 等. 液晶器件相位调制特性研究[J]. 光子学报, 2009, 38(4): 745-746.

LIU Y J, LIAN J, HU L F, et al. The investigation of phase modulation of liquid crystal device[J]. Acta Photonica Sinica , 2009, 38(4): 745-746. (in Chinese)

吴晓平, 许远忠, 胡强高. 一种基于液晶技术的可调谐滤波器研究[J]. 光学与光电技术, 2004, 2(3): 33-34.

WU X P, XU Y Z, HU Q G. Research of the tunable filter based on liquid crystal technology[J]. Optics & Optoelectronic Technology , 2004, 2(3): 33-34. (in Chinese)

徐金宏, 拜爱萍. JONES矩阵法推导偏振光关涉的光强公式[J]. 广西物理, 2010, 31(3): 40-42.

XU J H, BAI A P. Deduction of light intensity formula related to polarized light by JONES matrix method[J]. Guangxi Physics , 2010, 31(3): 40-42. (in Chinese)

胡玲. 电光调制的琼斯矩阵分析[J]. 科学论坛, 2013, 20(1): 197.

HU L. Jones matrix analysis of electro-optic modulation[J]. Science Forum , 2013, 20(1): 197. (in Chinese)

邹明. 偏振光干涉的琼斯矩阵分析[J]. 大学物理, 2008, 27(10): 30-31.

ZOU M. Analyses of Jones matrix of polarized light interference[J]. College physics, 2008, 27(10): 30-31. (in Chinese)

刘静. 扭曲向列型液晶纯相位空间光调制器[D]. 大连: 大连理工大学, 2007.

LIU J. The phase only twist nematic liquid crystal spatial light modulator[D]. Dalian: Dalian University of Technology, 2007. (in Chinese)

葛爱明, 隋展, 徐克璹. 反射型LCOS器件纯相位调制特性的研究[J]. 物理学报, 2003, 52(10): 2481-2483.

GE A M, SUI Z, XU K S. Charracteristics of phase-only modulation using a reflective liquid crystal on silicon device[J]. Acta Physica Sinica , 2003, 52(10): 2481-2483. (in Chinese)

葛爱明, 隋展, 苏俊宏. 反射式液晶器件振幅调制特性的研究[J]. 中国激光, 2005, 32(3): 346-348.

GE A M, SUI Z, SU J H. Research on characteristics of amplitude modulation of a reflective liquid crystal on silicon device[J]. Chinese Journal of Lasers , 2005, 32(3): 346-348. (in Chinese)

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Overview of active terahertz metasurface devices based on liquid crystal

Subwavelength gold gratings refection phase modulated by liquid crystals

Self-referenced methods for phase calibration of a spatial light modulator

Method for measuring the twist angle and thickness of liquid crystal polarization grating based on Jones matrix

Related Author

Qin DAI

Jia-qi LU

Yun-he SONG

Ri-na WU

Rui GAO

HU Wei

XU Yaqian

SHEN Yanchun

Related Institution

College of Science， Shenyang Ligong Uoiversity

College of Engineering and Applied Sciences， Nanjing University

Information Engineering Institute， Guangzhou Railway Polytechnic

Key Laboratory of Intelligent Computing & Signal Processing， Ministry of Education， Anhui University

Department of Precision Instruments, Tsinghua University

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China 130033 Postal code：130033
Tel：0431-86176059 Email：yjxs@ciomp.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰