High contrast and low threshold holographic polymer dispersed liquid crystal grating

LI Wen-cui; ZHENG Zhi-gang; LIU Yong-gang; SONG Jing; XUAN Li

doi:10.3788/OPE.20101807.1504

您当前的位置：

首页 >

文章列表页 >

High contrast and low threshold holographic polymer dispersed liquid crystal grating

Article | 更新时间：2020-08-12

- High contrast and low threshold holographic polymer dispersed liquid crystal grating
- Optics and Precision Engineering Vol. 18, Issue 7, Pages: 1504-1510(2010)
- 作者机构：
  
  1. 中国科学院研究生院北京,100039
  2. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春,130033
  3. 华东理工大学理学院上海,200237
  4. 长春理工大学材料科学与工程学院,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20101807.1504
  CLC：
- Received：31 July 2009，
  
  Revised：08 September 2009，
  
  Published Online：30 July 2010，
  
  Published：20 July 2010
- 稿件说明：
移动端阅览
李文萃, 郑致刚, 刘永刚, 宋静, 宣丽. 高对比度低压驱动全息聚合物分散液晶光栅[J]. 光学精密工程, 2010,18(7): 1504-1510

LI Wen-cui, ZHENG Zhi-gang, LIU Yong-gang, SONG Jing, XUAN Li. High contrast and low threshold holographic polymer dispersed liquid crystal grating[J]. 光学精密工程, 2010,18(7): 1504-1510
李文萃, 郑致刚, 刘永刚, 宋静, 宣丽. 高对比度低压驱动全息聚合物分散液晶光栅[J]. 光学精密工程, 2010,18(7): 1504-1510 DOI： 10.3788/OPE.20101807.1504.

LI Wen-cui, ZHENG Zhi-gang, LIU Yong-gang, SONG Jing, XUAN Li. High contrast and low threshold holographic polymer dispersed liquid crystal grating[J]. 光学精密工程, 2010,18(7): 1504-1510 DOI： 10.3788/OPE.20101807.1504.

摘要

为了降低全息聚合物分散液晶光栅的驱动电压并提高其对比度

基于偏振原理设计了一种新型电调谐光栅。对传统的全息聚合物分散液晶(HPDLC)光栅进行了基板表面取向处理

加强液晶的均一排列程度

消除了液晶区域内的散射;然后

在光栅前面放置扭曲向列(TN)偏振调谐器

通过调节入射光的偏振方向

实现光栅内液晶折射率的变化

进而改变与聚合物折射率的差别

实现衍射强度的调谐。实验结果表明:光栅的阈值电压降低到了0.75~0.8 V

对比度提高到了245∶1

是传统HPDLC光栅的6~7倍

同时也大幅降低了散射损失且稳定性良好

可满足高端光学设备及显示产品方面的需求。

Abstract

To reduce the threshold and to improve the contrast of the conventional Holographic Polymer Dispersed Liquid Crystal(HPDLC) grating

a new type electrically tunable grating based on a Twist Nematic (TN) cell was designed. Firstly

the substrates of conventional HPDLC grating were processed to get an uniform alignment of liquid crystal in the grating

which makes the liquid crystal field depend strongly on the polarization of incident light. Then

a TN polarization modulator was placed in front of the grating to adjust the incident light polarization to change the refractive index of the liquid crystal field. Consequently

by matching the refractive index of polymer with the alignment of liquid crystal

the electrical-optical properties of the grating could be controlled. The experimental results indicate that the threshold voltage of the new HPDLC grating is as low as 0.75-0.8 V and the contrast ratio reaches 245∶1

which is 6-7 times of that of the conventional HPDLC grating. The HPDLC grating can work in a stable state for a long time.

关键词

Keywords

references

时轮,郝德阜. 变栅距衍射光栅的原理及应用[J]. 光学精密工程,2001,9(3):284-287. SHI L, HAO D F. Theory and applications of varied line-space grating[J].Opt. Precision Eng., 2001,9(3):284-287.(in Chinese)

郭玉彬,葛璜. 光纤Bragg光栅的研究[J]. 光学精密工程,1999,7(1):31-34. GUO Y B, GE H. Fabrication of fiber Bragg grating[J].Opt. Precision Eng.,2001,7(1):31-34.(in Chinese)

TANAKA K, KATO K, DATE M.Fabrication of holographic polymer dispersed liquid crystal (HPDLC) with high reflection efficiency[J]. Jpn. J. Appl. Phys., 1999,38:277-278.

LAWRENCE H, DOMASH, TONY C, et al.. Switchable-focus lenses in holographic polymer-dispersed liquid crystal[J].SPIE, 1996,2689:188-194.

XIANYU H, QI J, COHN R F, et al.. Total-internal-reflection mode in holographic polymer dispersed liquid crystals[J].Optics Letters, 2003,28(10):792-794.

DOMASH L H, CRAWFORD G P, ASHEAD C, et al.. Holographic PDLC for photonic applications[J].SPIE,2000,4107:46-58.

SUTHERLAND R L, NATARAJAN L V, TONDIGLIA V P. Bragg gratings in an acrylate polymer consisting of periodic polymer-dispersed liquid-crystal planes[J].Chem. Mate., 1993,5:1533-1538.

NATARAJAN L V, SUTHERLAND R L, TATARAJAN V P, et al.. Electrically switchable volume gratings in polymer-dispersed liquid crystals[J]. Appl. Phys. Lett.,1994,64(9):1074-1076.

BUNNING T J, NATARAJAN L V, TATARAJAN V P, et al.. Holographic polymer-dispersed liquid crystals[J].Annu. Rev. Mater. Sci., 2000,30:83-115.

MUCHA M. Polymer as an important component of blends and composites with liquid crystals[J]. Prog. Polym. Sci., 2003, 28:837-873.

KLOSTERMAN J, NATARAJAN L V, TONDIGLIA V P, et al.. The influence of surfactant in reflective HPDLC gratings [J].Polymer, 2004,45:7213-7218.

宋静,郑致刚,刘永刚,等. 含氟单体材料对全息聚合物分散液晶Bragg光栅电光特性的影响[J]. 液晶与显示,2006,21(5):443-446. SONG J, ZHENG Z G, LIU Y G, et al.. Influence of fluorinated methacrylate monomers on electro-optical characteristics of HPDLC bragg gratings[J].Chinese Journal of Liquid Crystals and displays, 2006,21(5):443-446.(in Chinese)

SARKAR M D, QI J, CRAWFORD G P. Influence of partial matrix fluorination on morphology and performance of HPDLC transmission gratings [J].Polymer, 2002,43:7335-7344.

SURTHERLAND R L, TONDIGLIA V P, NATARAJAN L V, et al.. Coherent diffraction and random scattering in thiol-ene-based holographic polymer-dispersed liquid crystal reflection gratings[J]. Appl. Phys., 2006,99:123104-1-123104-12.

LIU Y J, ZHANG B, JIA Y, et al.. Improvement of the diffraction properties in holographic polymer dispersed liquid crystal Bragg gratings[J]. Opt. Comm., 2003,218:27-32.

Views

575

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Measurement system for optical concealment depth of underwater vehicle

Analysis on detection ability of shipborne optic-electronic equipment

Suppression of ASE from excimer laser using cascaded UV electro-optical switch

Global dimming algorithm for side-lit LED backlights

Related Author

ZHU Hai-rong

ZHU Hai

LIU Jin-tao

WEN Ya-nan

LI Wei-yu

QIAO Jian&nbsp

HU Yun

ZHAO Xue-qing

Related Institution

Navy Submarine Academy, Qingdao 266000, China

College of Information Science and Engeering, Ocean University of China, Qingdao 266000, China

Qingdao Academy for Opto-electronics Engineering

Changchun Institute of Optics, Fine Mechanics and Physics,&nbsp

Chinese Academy of Sciences

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176855 Email：gxjmgc@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