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Research on Telescope TTL Coupling Noise in Intersatellite Laser Interferometry

  • Zhi WangEmail author
  • Tao Yu
  • Ya Zhao
  • Ziren Luo
  • Wei Sha
  • Chao Fang
  • Yukun Wang
  • Shaoxin Wang
  • Keqi Qi
  • Yongxian Wang
  • Xuanwen Xu
Open Access
Regular
  • 22 Downloads

Abstract

The detection mission of gravitational waves in space is that the accuracy of the long-baseline intersatellite laser interferometry on the million-kilometer order needs to reach the order of \(8 \rm{pm}/\sqrt{\rm{Hz}}\). Among all noise sources that affect the interferometry accuracy, tilt-to-length (TTL) coupling noise is the second largest source of noise after shot noise. This paper focuses on studying the contribution of TTL coupling noise of the telescope system in the intersatellite scientific interferometer. By referring to the laser interferometer space antenna (LISA)’s noise budget, TTL coupling noise is required to be within ±25μm/rad (±300μrad). Therefore, this paper focuses on studying both the mechanism of TTL coupling noise due to the noise sources of the telescope and the method of suppressing the TTL noise, which can lay a foundation for noise distribution and the development of engineering prototypes in subsequent tasks.

Keywords

Intersatellite laser interferometry telescope TTL coupling noise 

Notes

Acknowledgments

This work is supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA15020000).

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Copyright information

© The Author(s) 2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Zhi Wang
    • 1
    Email author
  • Tao Yu
    • 1
  • Ya Zhao
    • 1
    • 2
  • Ziren Luo
    • 3
  • Wei Sha
    • 1
  • Chao Fang
    • 1
  • Yukun Wang
    • 1
  • Shaoxin Wang
    • 1
  • Keqi Qi
    • 1
  • Yongxian Wang
    • 1
  • Xuanwen Xu
    • 4
  1. 1.Changchun Institute of Optics, Fine Mechanics and PhysicsChinese Academy of SciencesChangchunChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.Institute of MechanicsChinese Academy of SciencesBeijingChina
  4. 4.Jilin UniversityChangchunChina

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