近地面相位涡旋对自适应光学校正的影响

量子电子学报 ›› 2020, Vol. 37 ›› Issue (4): 466-476.

• “激光大气传输与探测”专辑 • 上一篇下一篇

近地面相位涡旋对自适应光学校正的影响

赵旺1,2, 赵孟孟1,2,3, 王帅1,2, 杨平1,2

1 中国科学院自适应光学重点实验室, 四川成都610209; 2 中国科学院光电技术研究所, 四川成都610209; 3 中国科学院大学, 北京100049

收稿日期:2020-05-13 修回日期:2020-06-10 出版日期:2020-07-28 发布日期:2020-07-21
通讯作者: E-mail: pingyang2516@163.com E-mail:pingyang2516@163.com
作者简介:赵旺( 1991 - ), 河北沧州人, 博士, 主要从事激光大气传输补偿方面的研究。E-mail: zw􀀀2017@qq.com
基金资助:
Supported by National Natural Science Foundation of China (国家自然科学基金, 61875203 , 61805251, 11704382)

Influence of near ground phase vortex on the correction of adaptive optics

ZHAO Wang1,2, ZHAO Mengmeng1,2,3, WANG Shuai1,2, YANG Ping1,2

1 Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China; 2 Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China; 3 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2020-05-13 Revised:2020-06-10 Published:2020-07-28 Online:2020-07-21

摘要/Abstract

摘要： 近地面激光大气传输中, 由于强湍流的影响, 畸变波前中存在相位涡旋, 使得自适应光学系统校正效果下降甚至失效。通过建立近地面激光大气传输模型, 分析了不同闪烁强度下畸变波前中相位涡旋分布特性, 以及自适应光学系统校正效果。针对近地面相位涡旋不能被有效校正的问题, 分析了波前畸变被完全复原时不同单元数变形镜对含相位涡旋波前畸变的校正效果。研究表明: 采用直接斜率法的自适应光学系统只能校正畸变波前中的连续相位, 不能校正相位涡旋组成的不连续相位; 含相位涡旋的波前畸变被有效复原后, 连续表面变形镜能够校正不连续相位, 现阶段限制自适应光学系统近地面校正效果的关键因素是波前畸变能否被有效复原。

关键词: 自适应光学, 激光传输, 大气湍流, 相位涡旋

Abstract: When laser beam propagates through the strong turbulent atmosphere, phase vortex existing in the distorted wavefront makes the correction of adaptive optics system decline. By establishing a near ground laser propagation model, the distribution characteristics of phase vortex under different scintillation levels and the correction of adaptive optics system were analyzed. In order to investigate the reason why the phase vortex cannot be effectively corrected, the correction result of deformable mirrors with different number of actuators is analyzed when the wavefront distortion is completely restored. Results show that the adaptive optics system using the direct slope method can only correct the continuous phase, but not the discontinuous phase composed of phase vortices. And after the wavefront distortion with phase vortices is effectively restored, the continuous surface deformable mirror can correct the discontinuous phase. At this stage, the key factor limiting the correction effect of the adaptive optics is whether the wavefront distortion can be effectively restored.

Key words: adaptive optics, laser propagation, atmospheric turbulence, phase vortex

中图分类号:

O439

赵旺, 赵孟孟, 王帅, 杨平, . 近地面相位涡旋对自适应光学校正的影响[J]. 量子电子学报, 2020, 37(4): 466-476.

ZHAO Wang, ZHAO Mengmeng, WANG Shuai, YANG Ping, . Influence of near ground phase vortex on the correction of adaptive optics[J]. Chinese Journal of Quantum Electronics, 2020, 37(4): 466-476.

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近地面相位涡旋对自适应光学校正的影响

Influence of near ground phase vortex on the correction of adaptive optics

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