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多用途激光通信天线设计

Design of Multipurpose Optical Antenna for Laser Communication

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摘要

为了满足空间多节点激光通信系统的研制与调试要求, 提出了一种多用途激光通信光学天线。通过替换透镜或分光组件, 实现激光通信光学天线与自准直平行光管功能的切换。对主镜室进行加强设计, 提高了系统整体刚度并使其具有遮光罩的功能。主镜室前端面与盘式次镜架连接, 方便光学系统的装校工作, 内部通过6个粘接点与主镜相连, 后端面连接主镜室背板, 以提供透镜组件、分光组件及主镜辅助支撑组件的安装接口。有限元分析结果表明, 本结构1阶模态为345 Hz, 环境温度在20 ℃±5 ℃范围内, 主镜面形误差均方根值优于λ/28。使用4维(4D)干涉仪对系统波像差进行检测, 结果表明, 激光通信光学天线工作模式下系统波前均方根值优于λ/14, 能够满足激光通信系统的指标要求。

Abstract

We design a multipurpose laser communication optical antenna to develop and debug the space multi-node laser communication system. The laser communication optical antenna and autocollimator can be switched when the lens or the optical beam splitter in the classic Cassegrain system is chosen. The primary mirror room is designed to improve the overall stiffness of the system and can be used as the lens hood of the system. The front end of the primary mirror room is connected with the disc-type secondary frame so as to assemble and debug the optical system conveniently. The primary mirror is fixed through six bonding points in the primary mirror room. The back end is connected with the backboard of the primary mirror room to provide the installation interfaces for lens assembly, optical beam-splitting assembly, and primary mirror auxiliary support. The finite element analysis results show that when the first order mode frequency of this structure is 345 Hz and the ambient temperature is 20 ℃±5 ℃, the root mean square (RMS) value of surface shape error of the primary mirror is less than λ/28. Tested by a 4D interferometer, the RMS value of wavefront aberration of the system is less than λ/14 under work mode of laser communication optical antenna, which can meet the requirements of laser communication system.

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中图分类号:TN929.13

DOI:10.3788/lop55.020602

所属栏目:光纤光学与光通信

基金项目:国家自然科学基金重大研究计划(91338116)

收稿日期:2017-07-17

修改稿日期:2017-08-08

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作者单位    点击查看

李响:长春理工大学空间光电技术国家地方联合工程研究中心, 吉林 长春 130022
柳鸣:长春理工大学空间光电技术国家地方联合工程研究中心, 吉林 长春 130022
李小明:长春理工大学空间光电技术国家地方联合工程研究中心, 吉林 长春 130022
张家齐:长春理工大学空间光电技术国家地方联合工程研究中心, 吉林 长春 130022
白杨杨:长春理工大学空间光电技术国家地方联合工程研究中心, 吉林 长春 130022
孟立新:长春理工大学空间光电技术国家地方联合工程研究中心, 吉林 长春 130022
张立中:长春理工大学空间光电技术国家地方联合工程研究中心, 吉林 长春 130022

联系人作者:李响(abelfeel@163.com)

备注:李响(1986—), 男, 博士, 助理研究员, 主要从事光学有效载荷光学精密机械结构的设计与优化方面的研究。E-mail: abelfeel@163.com

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引用该论文

Li Xiang,Liu Ming,Li Xiaoming,Zhang Jiaqi,Bai Yangyang,Meng Lixin,Zhang Lizhong. Design of Multipurpose Optical Antenna for Laser Communication[J]. Laser & Optoelectronics Progress, 2018, 55(2): 020602

李响,柳鸣,李小明,张家齐,白杨杨,孟立新,张立中. 多用途激光通信天线设计[J]. 激光与光电子学进展, 2018, 55(2): 020602

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