液晶可变延迟器相位延迟-电压曲线精确快速标定

王刚; 侯俊峰; 林佳本; 王东光; 张鑫伟

doi:10.3788/OPE.20202804.0827

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液晶可变延迟器相位延迟-电压曲线精确快速标定

现代应用光学 | 更新时间：2020-08-13

- 液晶可变延迟器相位延迟-电压曲线精确快速标定
- Accurate and fast calibration of liquid crystal variable retarder phase delay-voltage curve
- 光学精密工程 2020年28卷第4期页码：827-833
- 作者机构：
  
  1.中国科学院大学，北京 100049
  2.中国科学院中国科学院太阳活动重点实验室，北京 100101
  3.中国科学院大学，北京 100049
- 作者简介：
  
  [ "王刚 (1992-)，男，吉林白山人，博士研究生，2014年于合肥工业大学获得学士学位，2016年于北京交通大学获得硕士学位，研究方向为偏振光学仪器及自动控制。E-mail: gwang@nao.cas.cn" ]
  侯俊峰 (1986-)，男，山西晋城人，博士，高级工程师，硕士生导师，主要从事偏振光学仪器的研究. E-mail:jfhou@bao.ac.cn HOU Jun-feng, E-mail:jfhou@bao.ac.cn
- 基金信息：
  
  中科院空间科学先导专项(No. XDA04061002);中科院空间科学先导专项预先研究项目(No. XDA15010800);国家自然科学基金面上项目(No. 11773040)
- DOI：10.3788/OPE.20202804.0827
  中图分类号： TH744.2
- 收稿日期：2019-06-17，
  
  修回日期：2019-07-15，
  
  录用日期：2019-7-15，
  
  纸质出版日期：2020-04-15
- 稿件说明：
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王刚, 侯俊峰, 林佳本, 等. 液晶可变延迟器相位延迟-电压曲线精确快速标定[J]. 光学精密工程, 2020,28(4):827-833.

Gang WANG, Jun-feng HOU, Jia-ben LIN, et al. Accurate and fast calibration of liquid crystal variable retarder phase delay-voltage curve[J]. Optics and precision engineering, 2020, 28(4): 827-833.
王刚, 侯俊峰, 林佳本, 等. 液晶可变延迟器相位延迟-电压曲线精确快速标定[J]. 光学精密工程, 2020,28(4):827-833. DOI： 10.3788/OPE.20202804.0827.

Gang WANG, Jun-feng HOU, Jia-ben LIN, et al. Accurate and fast calibration of liquid crystal variable retarder phase delay-voltage curve[J]. Optics and precision engineering, 2020, 28(4): 827-833. DOI： 10.3788/OPE.20202804.0827.

摘要

相位延迟-电压曲线的精确标定是向列型液晶可变相位延迟器能否实现高精度偏振测量的关键。为了提高液晶相位延迟的测量精度，建立了一套精确高效的自动测量系统。首先，提出了一种新的测量方法，该方法综合了光强法、索累补偿器法以及等偏离测量技术，可以解决现有方法测量精度低或效率低的问题。在此基础上建立了测量系统，并利用Labview技术实现了系统的自动化测量，进一步缩短了测量时间。最后，对系统的测量误差、重复精度以及工作效率进行了实验验证。实验结果表明，系统延迟测量误差小于0.057 5%

，重复精度小于0.019 7%

，可在30 min内完成100个延迟采样点的自动化测量。该系统适用于可见光范围内液晶可变延迟器相位延迟-电压曲线的精确标定。

Abstract

The accurate calibration of the phase-delay voltage curve is the key to achieving high precision polarization measurements using a nematic Liquid Crystal Phase Variable Retarder (LCVR). An accurate and efficient automatic measurement system was established to improve the accuracy of the liquid crystal retarder delay measurement. Firstly

a new measurement method was proposed

which combined the light intensity method

the Soleil compensator method

and the equal deviation measurement technology

to solve the problem of low measurement accuracy or the low efficiency of the existing methods. A measurement system was developed to overcome these challenges

and automated measurement of the system was realized by Labview technology

which further shortened the system measurement time. Finally

the experimental errors

repeatability

and the working efficiency of the system were verified experimentally. The experimental results show that the system delay measurement error is less than 0.0575%λ

the repeat accuracy is less than 0.0197%λ

and 100 delayed sampling points can be automatically measured in 30 minutes. The system is suitable for the accurate calibration of the phase delay-voltage curve of a liquid crystal variable retarder in the visible range.

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references

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