Opto-Electronic Engineering, Volume. 51, Issue 2, 240027(2024)

Progress in the research of testing and evaluation techniques for spaceborne gravitational wave telescopes

Lanqiang Zhang1,2,3, Yi Zeng1,2,3, Xiaohu Wu4, Jinsheng Yang1,2, Xiaoli Ruan1,2, Qiang Xin1,2, Naiting Gu1,2,3, and Changhui Rao1,2,3、*
Author Affiliations
  • 1National Laboratory on Adaptive Optics, Chengdu, Sichuan 610209, China
  • 2Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 3University of Chinese Academy of Sciences, Beijing 100049, China
  • 4Shandong Institute of Advanced Technology, Jinan, Shandong 250100, China
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    Spaceborne telescopes for gravitational wave detection crucially collimate bidirectional beams in ultra-long interferometric optical paths. The faint optical path changes due to gravitational waves demand pm-level optical path length stability and below 10?10 level backscattered light in the telescopes. The ultra-high-level specifications requirements are out of state-of-the-art testing techniques. The development of testing and evaluation techniques for spaceborne telescopes is a crucial prerequisite for the success of the space gravitational wave detection program. This paper overviews the development of spaceborne gravitational wave detection telescopes, focusing on the optical path length stability and backscattered light testing status, results, and further plans, providing reference in the testing and evaluation of Chinese spaceborne gravitational wave detection telescopes.


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    Lanqiang Zhang, Yi Zeng, Xiaohu Wu, Jinsheng Yang, Xiaoli Ruan, Qiang Xin, Naiting Gu, Changhui Rao. Progress in the research of testing and evaluation techniques for spaceborne gravitational wave telescopes[J]. Opto-Electronic Engineering, 2024, 51(2): 240027

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    Paper Information

    Category: Research Articles

    Received: Jan. 26, 2024

    Accepted: Feb. 5, 2024

    Published Online: Apr. 26, 2024

    The Author Email: Rao Changhui (饶长辉)