一种时间延迟干涉技术及锁臂稳频集成半物理实验验证方法
By constructing a locking arm frequency stabilization system and adopting a multi-parameter collaborative optimization strategy, the problem of poor noise suppression effect of laser locking arms under multi-source disturbance environment was solved, and efficient suppression of laser frequency noise and improvement of signal-to-noise ratio of gravitational wave signal were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INST OF MECHANICS CHINESE ACAD OF SCI
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing laser-locked arm technology is not effective in noise identification and suppression under multi-source disturbance environments, especially in the case of large frequency drag errors caused by the Doppler effect, which makes it difficult to meet the noise requirements for gravitational wave detection.
Using time-delay interferometry and a semi-physical experimental verification method for locking arm frequency stabilization, a locking arm frequency stabilization system is constructed. A multi-parameter collaborative optimization strategy is established to optimize the controller parameters to overcome the instability of the single-arm locking arm frequency stabilization system. Combined with a data-driven feedback controller, intelligent identification and precise suppression of laser frequency noise are achieved.
The suppression ratio of laser frequency noise was significantly improved, and the signal-to-noise ratio of the gravitational wave signal relative to laser frequency noise and other additional noise in the link was increased, verifying the feasibility and robustness of the optimization strategy.
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Figure CN120805319B_ABST