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自适应光学系统中变形镜和波前传感器共轭位置要求的分析

Analysis of the Conjugation Request Between the Wavefront Sensors and the Deformable Mirrors in Adaptive Optics System

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摘要

通过对几何光学和物理光学模型的数值计算,分析了自适应光学系统中小像差畸变波前在空间自由传播时自身的变化情况,进而给出了系统中对变形镜和波前探测器与被校正瞳面之间共轭位置关系的要求和允许范围。结果表明,波前自由传播时的变化程度决定于像差自身的类型和大小、光束的口径以及传播的距离,大口径小像差波前近距离传播时波前变化误差很小。一般来说,变形镜和波前传感器偏离被校正瞳面共轭位置距离满足菲涅尔数大于1000 时,对系统校正效果的影响可以忽略。实际应用中,应该根据校正对象的特征来具体计算波前误差随传播距离的变化,从而设计波前传感器和变形镜的位置,以及选择使用4F 光学系统。本文的分析可以为自适应光学系统的整体光路设计提供一定理论参考。

Abstract

Based on the geometry optical theory and the diffraction optical theory, the variety of wavefront error with the propagation distance in free space is analyzed, so the spatial conjugation request of deformable mirrors, wavefront sensors and the corrected pupil in the Adaptive Optics (AO) system are presented. The results show that the propagation distance, the aperture of beam and the magnitude of the aberration affect wavefront error together. The wavefront variety is not distinct for small aberrations near propagating with a big aperture. Generally, the system’s compensation capability doesn’t decrease when the wavefront sensors and deformable mirrors depart from the conjugation position in some range whose Fresnel number is more than 1000. The positions of wavefront sensors and deformable mirrors should be designed and the 4F optical system is selected according to the character of the aberrations. This paper will provide some theoretical reference for the optical design of the AO system.

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中图分类号:O439

所属栏目:自适应光学

收稿日期:2008-12-25

修改稿日期:2009-02-19

网络出版日期:0001-01-01

作者单位    点击查看

杨华峰:国防科学技术大学 光电科学与工程学院,长沙 410073;中国科学院光电技术研究所,成都 610209
饶长辉:中国科学院光电技术研究所,成都 610209
张雨东:中国科学院光电技术研究所,成都 610209
姜文汉:中国科学院光电技术研究所,成都 610209

联系人作者:杨华峰(windgreen_2001@sina.com)

备注:杨华峰|博士研究生|主要从事自适应光学方面研究工作|(1979-),男(汉族),山西太原人。

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引用该论文

YANG Hua-feng,RAO Chang-hui,ZHANG Yu-dong,JIANG Wen-han. Analysis of the Conjugation Request Between the Wavefront Sensors and the Deformable Mirrors in Adaptive Optics System[J]. Opto-Electronic Engineering, 2009, 36(4): 27-34

杨华峰,饶长辉,张雨东,姜文汉. 自适应光学系统中变形镜和波前传感器共轭位置要求的分析[J]. 光电工程, 2009, 36(4): 27-34

被引情况

【1】郑翰清,饶长辉,饶学军,姜文汉,杨金生. 基于哈特曼-夏克波前传感器的波面拼接检测方法. 光学学报, 2009, 29(12): 3385-3390

【2】杜荣清,张小军. 大行程变形镜有限元分析. 光电工程, 2011, 38(5): 30-34

【3】牛志峰,郭建增,周小红. 变形镜受热变形引起的波前畸变仿真及补偿. 强激光与粒子束, 2015, 27(1): 11010--1

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