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A multi-axis interferometer based 6-DoF readout system for the gravitational wave detection

  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A new optical read-out system based on three groups of L-shape 3-axis interferometer is proposed to measure 6-degrees-of-freedom (6-DoF) of the test mass (TM) in the gravitational wave (GW) detection missions. In this system, the source laser is firstly divided into three parts to detect the displacement of the three perpendicular planes of the TM. To decouple the translations and rotations with respect to the XYZ axis, each part of the laser is further applied as the source of the L-shape 3-axis interferometer for the posture detection of each plane. The results of the numerical simulation showed that the solution accuracy of the translation and rotation are better than ±2×10-2 pm and ±3×10-5 nrad respectively, proving the computational accuracy is sufficient for the project requirements. The works above will provide a theoretical basis of the optical read-out system for the space-based GW detection mission.

Original languageEnglish
Title of host publicationFourteenth International Conference on Information Optics and Photonics, CIOP 2023
EditorsYue Yang
PublisherSPIE
ISBN (Electronic)9781510671744
DOIs
StatePublished - 2023
Event14th International Conference on Information Optics and Photonics, CIOP 2023 - Xi'an, China
Duration: 7 Aug 202310 Aug 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12935
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference14th International Conference on Information Optics and Photonics, CIOP 2023
Country/TerritoryChina
CityXi'an
Period7/08/2310/08/23

Keywords

  • gravitational wave detection
  • multi-axis interferometer
  • test mass 6-DoF measurement

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