Coarse co-phasing detection of segmented mirrors

Bin LI; Yan-de LIU; Feng-yun XIE

doi:10.3788/OPE.20182611.2647

您当前的位置：

首页 >

文章列表页 >

Coarse co-phasing detection of segmented mirrors

Modern Applied Optics | 更新时间：2020-07-05

- Coarse co-phasing detection of segmented mirrors
- Optics and Precision Engineering Vol. 26, Issue 11, Pages: 2647-2653(2018)
- 作者机构：
  
  华东交通大学机电学院, 江西南昌 330013
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20182611.2647
  CLC： TH751
- Received：23 April 2018，
  
  Accepted：03 July 2018，
  
  Published：25 November 2018
- 稿件说明：
移动端阅览
Bin LI, Yan-de LIU, Feng-yun XIE. Coarse co-phasing detection of segmented mirrors[J]. Optics and precision engineering, 2018, 26(11): 2647-2653.
DOI：

Bin LI, Yan-de LIU, Feng-yun XIE. Coarse co-phasing detection of segmented mirrors[J]. Optics and precision engineering, 2018, 26(11): 2647-2653. DOI： 10.3788/OPE.20182611.2647.

摘要

为了实现拼接镜平移误差的大量程、快速检测，提出了一种利用白光（400~700 nm）远场光斑相干性来检测拼接镜piston误差的方法。该方法以两半圆孔间的非相干衍射图案为模板，利用互相关算法求解实际衍射图案与模板图案间的互相关系数，通过设定0.85阈值，实现拼接镜piston误差的粗共相检测。搭建了一套室内拼接镜的主动共相检测实验光路系统，其中拼接镜是由4块对边长为100 mm，曲率半径为2 000 mm的正六边形球面反射镜组成，利用白光（400~700 nm）远场光斑相干性测量拼接主镜各子镜间平移误差的方法进行了理论与仿真分析。利用波前探测器和主动光学技术实现了拼接镜精共焦误差的检测与调节，通过远场光斑相干性和主动光学技术实现了粗共相的检测和调节。实验表明：该方法耗时短、能量利用率高，可实现无限量程、±250 nm精度的检测和调节，适合拼接镜的粗共相检测和调节。

Abstract

To realize a time-efficient and wider range of measurements of piston errors of segmented mirror

a method based on the coherence of the Fraunhofer diffraction pattern of two half circles in visible light was proposed to detect the piston errors of the segmented mirror. In this method

the noncoherent diffraction pattern of the two half circulars was used as a template

and the cross-correlation algorithm was used to calculate the cross-correlation coefficient between the template pattern and the actual diffraction pattern. To achieve coarse co-phasing detection of piston errors of the segmented mirror

the threshold value of the cross correlation coefficient was set as 0.85. The proposed method has advantages such as time-efficiency

better energy usage ratio

infinite detection range

and a better measurement accuracy. The method was validated by theoretical

analytical

and numerical simulations. An active optics and co-phasing experimental system of the segmented mirror was built to measure and adjust the piston errors of the segmented mirror. The segmented mirror consists of four hexagonal segments whose edge to edge length is 100 mm and the curvature radius is 2 000 mm. Initially

to fine co-focus the segmented mirror

a shack-Hartmann sensor and active optics technology were used. Then

the coherence of the Fraunhofer diffraction pattern of the two half circulars in visible light was used to detect the piston errors of the segmented mirror

which can be adjusted using active optics technology. The experimental results show that the detection range is infinite and the measurement accuracy is better than ±250 nm. Theoretical

analytical

and experimental results demonstrated that the proposed method is suitable for segmented mirror coarse co-phasing measurement and adjustment.

关键词

Keywords

references

GARY C, TROY M. Rtrehl ratio and modulation transfer function for segmented mirror telescopes as functions of segment phase error[J] . Applied Optics , 1999, 38(31):6642-6647.

李斌, 唐金龙, 于文豪, 等.拼接误差对拼接镜成像质量影响的研究[J].激光与光电子进展, 2017, 54(7):179-188.

LI B, TANG J L, YU W H, et al .. Effect of segmented errors on image quality of segmented telescope[J]. Laser & Optoelectronic Progress , 2017, 54(7):179-188.(in Chinese)

TUTHILL P G, MONNIER J D, DANCHI W C, et al .. Michelson interferometry with the Keck telescope[J]. Publications of the Astronomical Society of the Pacific , 2000, 112(770):555-565.

RICHARD A. FRAZIN E. Nonlinear phase estimation with the nonmodulated pyramid wavefront sensor[J]. Journal of the Optical Society of America A , 2018, 35(4):594-607.

LUO Q, HUANG L H, GU N T, et al .. A modified phase diversity wavefront sensor with a diffraction grating[J]. Chinese Physics B , 2012, 21(9):1277-1287.

LI C W, ZHAN S J. Co-phasing of the segmented mirror based on the generalized phase diversity wavefront sensor[J]. SPIE , 2010, 8450(8450):84500B-1-84500B-6.

ORLOV V G, CUEVAS S, GARFIAS F, et al .. Co-phasing of segmented mirror telescopes with curvature sensing[J]. SPIE , 2000, 4004(4004):540-550.

MANUEL A M, PHILLION D W, OLIVIER S S, et al .. Curvature wavefront sensing performance evaluation for active correction of the Large Synoptic Survey Telescope[J]. Optics Express , 2010, 18(2):1528-1533.

林旭东, 王建立, 刘欣悦, 等.拼接镜主动光学共相实验[J].光学精密工程, 2010, 18(7):1520-1527.

LIN X D, WANG J L, LIU X Y, et al .. Co-phasing experiment of segmented-mirror active optics[J]. Opt. Precision Eng. , 2010, 18(7):1520-1527.(in Chinese)

李斌, 吴建, 刘燕德, 等.拼接镜主动共相实验研究[J].光子学报, 2018, 47(2):0212003-1-0212003-11.

LI B, WU J, LIU Y D, et al .. Co-phasing experiment of active optics for segmented mirror[J]. Acta Photonica Sinica , 2018, 47(2):0212003-1-0212003-11.(in Chinese)

LI Y, WANG SH Q, RAO CH H. Dispersed-fringe-accumulation-based left-subtract-right method for fine co-phasing of a dispersed fringe sensor[J]. Applied Optics , 2017, 56(15):4267-4273.

LI B, YU W H, CHEN M, et al .. Co-phasing experiment of segmented mirror using a combined broadband and two-wavelength algorithm[J]. Applied Optics , 2017, 56(32):8871-8879.

LI B, YU W H, TANG J L, et al .. Theory and experiment of phasing detection by use of two wavelengths[J]. Applied Optics , 2017, 56(1):1-7.

LI B, YU W H, CHEN M, et al .. Co-focus experiment of segmented mirror[J]. Chinese Physics B , 2017, 18(6):124-130.

Views

127

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Dome design of large ground-based telescope

Design of high voltage amplifier for thousand-element adaptive piezoelectric deformable mirror

Automatic focusing of Cassegrain telescope based on environmental temperature feedback

Dual-motor de-rotator system of prime focus alt-azimuth telescope with large field of view

Dynamic analysis of two meters telescope mount control system

Related Author

WANG Zhichen

WANG Zhi

LIU Xiangyi

DENG Yongting

SHAO Meng

Yang Leqiang

YAO Kainan

LI Hongwen

Related Institution

University of Chinese Academy of Sciences

Changchun Institute of Optics，Fine Mechanics and Physics，Chinese Academy of Sciences

Advanced Laser Technology Laboratory of Anhui Province

University of Science and Technology of China

Key Laboratory of Atmospheric Optics，Anhui Institute of Optics and Fine Mechanics， Hefei Institutes of Physical Science，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