Correction of Turbulence in Horizontal Direction Using a Liquid Crystal Wave-Front Corrector

JIANG Bao-guang; MU Quan-quan; CAO Zhao-liang; LI Chao; XIA Ming-liang; XUAN Li

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Correction of Turbulence in Horizontal Direction Using a Liquid Crystal Wave-Front Corrector

Device Technology & Physics | 更新时间：2020-08-12

- Correction of Turbulence in Horizontal Direction Using a Liquid Crystal Wave-Front Corrector
- Chinese Journal of Liquid Crystals and Displays Vol. 24, Issue 3, Pages: 396-398(2009)
- 作者机构：
  
  1. 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,E-mail:jiangbg04@sina.com
  2. 中国科学院研究生院, 北京 100039
- 作者简介：
- 基金信息：
- DOI：
  CLC： O753.2;TH74
- Received：23 October 2008，
  
  Revised：02 January 1900，
  
  Published Online：30 June 2009，
  
  Published：30 June 2009
- 稿件说明：
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姜宝光;穆全全;曹召良;李超;夏明亮;宣丽. 液晶波前校正器校正水平方向上的大气湍流[J]. 液晶与显示, 2009,24(3): 396-398

JIANG Bao-guang;MU Quan-quan;CAO Zhao-liang;LI Chao;XIA Ming-liang;XUAN Li. Correction of Turbulence in Horizontal Direction Using a Liquid Crystal Wave-Front Corrector[J]. 液晶与显示, 2009,24(3): 396-398
姜宝光;穆全全;曹召良;李超;夏明亮;宣丽. 液晶波前校正器校正水平方向上的大气湍流[J]. 液晶与显示, 2009,24(3): 396-398 DOI：

JIANG Bao-guang;MU Quan-quan;CAO Zhao-liang;LI Chao;XIA Ming-liang;XUAN Li. Correction of Turbulence in Horizontal Direction Using a Liquid Crystal Wave-Front Corrector[J]. 液晶与显示, 2009,24(3): 396-398 DOI：

摘要

利用液晶波前校正器和哈特曼波前传感器组成的自适应光学系统对水平方向500 m 的大气湍流进行校正。首先测定了液晶波前校正器(LCWFC)的位相调制特性

测定结果表明其可以实现一个波长的调制量

同时利用Gamma校正实现了位相和灰度之间的线性调制关系。然后将该系统与孔径220 mm的望远镜进行对接。液晶自适应校正后

波面均方根误差降低到0.06

实现了0.68'的系统衍射极限分辨。实验结果表明:液晶波前校正器可以很好地校正水平方向500 m的大气湍流扰动。

Abstract

An adaptive optics system integrated with a LCWFC and a Shack-Hartmann wave-front sensor (WFS) were used to correct the turbulence in horizontal direction. Firstly

the phase modulation characteristic of the wave-front corrector was measured. The result showed that it can reach the modulation of 1 wave length. Meanwhile

the linear curve between phase modulation and voltage was gained by Gamma correction. At last

this system was combined with a 220 mm diameter telescope. After correction

the wavefront error was reduced to 0.06 and the diffractive limits 0.68 was also reached. The result shows that this system can corrected the turbulence effectively.

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references

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