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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.13134 |
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| _version_ | 1866914976039436288 |
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| author | Yan, Hao Lin, Xiang Xie, Siyuan |
| author_facet | Yan, Hao Lin, Xiang Xie, Siyuan |
| contents | Interferometric techniques are crucial for space-based gravitational wave detection, requiring a picometer-level stable optical bench, precise phasemeter, interstellar transponder low-light phase locking, and laser sideband communication. These technologies must be rigorously tested on the ground before deployment in space. The AEI group has previously developed a picometer-stable hexapod optical bench to verify the linearity and precision of phase extraction for LISA. In this paper, we introduce a quadrangle quasi-monolithic optical bench aimed at simplifying the system and expanding the range of tested interferometric techniques for TianQin. Experimental results demonstrate that the system achieves picometer-level optical pathlength stability and phase resolution over a large dynamic range. In the laser transponder link test, the light phase-locked residual noise is lower than ${\rm 10^{-4}\,rad/Hz^{1/2}}$ above millihertz frequency range, and the laser sideband modulation has no significant coupling to the measurements in the ${\rm mHz-Hz}$ band. These results provide critical technical validation for the implementation of future gravitational wave detection in space. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_13134 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Picometer-level quadrangle optical bonding bench for testing interferometric technologies in TianQin Yan, Hao Lin, Xiang Xie, Siyuan Instrumentation and Detectors Instrumentation and Methods for Astrophysics Interferometric techniques are crucial for space-based gravitational wave detection, requiring a picometer-level stable optical bench, precise phasemeter, interstellar transponder low-light phase locking, and laser sideband communication. These technologies must be rigorously tested on the ground before deployment in space. The AEI group has previously developed a picometer-stable hexapod optical bench to verify the linearity and precision of phase extraction for LISA. In this paper, we introduce a quadrangle quasi-monolithic optical bench aimed at simplifying the system and expanding the range of tested interferometric techniques for TianQin. Experimental results demonstrate that the system achieves picometer-level optical pathlength stability and phase resolution over a large dynamic range. In the laser transponder link test, the light phase-locked residual noise is lower than ${\rm 10^{-4}\,rad/Hz^{1/2}}$ above millihertz frequency range, and the laser sideband modulation has no significant coupling to the measurements in the ${\rm mHz-Hz}$ band. These results provide critical technical validation for the implementation of future gravitational wave detection in space. |
| title | Picometer-level quadrangle optical bonding bench for testing interferometric technologies in TianQin |
| topic | Instrumentation and Detectors Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2410.13134 |