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Preliminary design and analysis of telescope for space gravitational wave detection
空间引力波探测望远镜初步设计与分析

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Wang Zhi 1 *   Sha Wei 1   Chen Zhe 1   Kang Yusi 1   Luo Ziren 2   Li Ming 3   Li Yupeng 1,4  
文摘 The direct detection of gravitational waves opens up a new era of gravitational wave astronomy,and 100-year-old prediction on gravitational wavers by Einstein have been confirmed ultimately. The space gravitational wave detector makes it possible to detect rich sources of gravitational waves in the 0.1 mHz-1 Hz band. The space gravitational wave detector and the ground gravitational wave detector complement each other,and the combination of the two methods can realize the detection of gravitational waves in a broader band,thus uncovering more secrets of the early universe. Spatial laser interferometry gravitational wave detection uses heterodyne interferometry to measure changes in the order of 10 pm between two free-floating test masses that are millions of kilometers apart. Telescope is an important part of the laser interferometry system. Unlike the traditional geometrical imaging telescope,the telescope of the laser interferometry system shall meet the requirements of optical path stability for 1 pm and that of a harsh stray light. Based on the mission requirements of the Taiji Program in Space,this paper analyzes the functions and technical requirements of the telescope and completes the preliminary design of the principle prototype. In this paper,the sensitivity of the telescope system is analyzed according to the wavefront distribution in the far field of one million kilometers. At the same time,the thermal integration simulation in orbit is completed,which lays the technical foundation for the development of the subsequent principle prototypes.
其他语种文摘 引力波的直接观测已开启引力波天文学的新篇章,爱因斯坦的百年预言终获证实.空间引力波探测器使得探测0.1 mHz~ 1 Hz频段丰富的引力波源成为可能,与地面引力波探测器互为补充,才可实现更加宽广波段的引力波探测,揭开宇宙早期的更多秘密.空间激光干涉引力波探测采用外差干涉测量技术,测量间距百万公里的两自由悬浮测试质量间10 pm量级的变化量.望远镜是激光干涉测量系统的重要组成部分,1 pm的光程稳定性及苛刻的杂散光要求,不同于传统的几何成像望远镜.本文根据空间太极计划任务需求,对望远镜的功能及技术要求进行了分析,并完成了原理样机的初步方案设计,针对百万公里远场波前分布,分析了望远镜系统的敏感性,同时完成了在轨光机热集成仿真,为后面原理样机的研制奠定了技术基础.
来源 中国光学(中英文) ,2018,11(1):131-152 【扩展库】
DOI 10.3788/co.20181101.0131
关键词 telescope ; space-based gravitational waves detection ; Taiji Programe in Space ; LISA ; laser interferometric system
地址

1. Changchun Institute of Optics,Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033  

2. Institute of Mechanics,Chinese Academy of Sciences, Beijing, 100190  

3. DFH Satellite Co.,LTD, Beijing, 100094  

4. University of Chinese Academy of Sciences, Beijing, 100049

语种 英文
文献类型 研究性论文
ISSN 2095-1531
学科 机械、仪表工业
基金 Supported by Strategic Priority Research Program of the Chinese Academy of Sciences
文献收藏号 CSCD:6163977

参考文献 共 15 共1页

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引证文献 5

1 Wang Zhi Research on Telescope TTL Coupling Noise in Intersatellite Laser Interferometry Photonic Sensors,2020,10(3):265-274
被引 3

2 魏明 望远超分辨成像中的视场光阑影响及补偿机理 红外与激光工程,2020,49(2):0214004
被引 0 次

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