高对比度低压驱动全息聚合物分散液晶光栅

李文萃; 郑致刚; 刘永刚; 宋 静; 宣 丽

doi:10.3788/OPE.20101807.1504

您当前的位置：

首页 >

文章列表页 >

高对比度低压驱动全息聚合物分散液晶光栅

现代应用光学 | 更新时间：2020-08-12

- 高对比度低压驱动全息聚合物分散液晶光栅
- High contrast and low threshold holographic polymer dispersed liquid crystal grating
- 光学精密工程 2010年18卷第7期页码：1504-1510
- 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：
  
  国家自然科学基金资助项目(No.60277033();No.50473040();No.19974046();No.59973020)();吉林省科委基金资助项目(No
- DOI：10.3788/OPE.20101807.1504
  中图分类号：
- 收稿日期：2009-07-31，
  
  修回日期：2009-09-08，
  
  网络出版日期：2010-07-30，
  
  纸质出版日期：2010-07-20
- 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.

浏览量

575

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

水下航行器光学隐蔽深度测量系统

舰载光电成像系统探测能力分析

由级联紫外电光开关控制准分子激光的自发辐射放大

用于侧出式发光二极管背光的全局动态调光算法