Study on the Effect of Micro-Force Perturbations and Temperature Fluctuation on Interferometer for the Taiji Program

Area of Science:

• Astronomy and Astrophysics
• Optical Metrology
• Gravitational Wave Detection

Background:

• The Taiji program aims for high-precision interferometric measurements for gravitational wave detection.
• Interferometric measurement resolution is critical for the success of space-based gravitational wave observatories.
• Micro-force perturbations and temperature fluctuations are significant noise sources affecting interferometric measurements.

Purpose of the Study:

• To develop and validate a noise suppression method for enhancing interferometric measurement resolution in the Taiji program.
• To quantify the impact of micro-force perturbations and temperature fluctuations on interferometric results.
• To provide a framework for noise sensing and elimination in future Taiji interferometers.

Main Methods:

• Establishing a transfer function to model the influence of micro-force perturbations and temperature fluctuations.
• Experimentally verifying the derived transfer function using data from the Taiji-1 interferometer.
• Comparing numerical simulations with experimental results to validate the transfer function.

Main Results:

• The transfer function accurately quantifies the effect of micro-force and temperature noise on interferometric measurements.
• Experimental and numerical results for the transfer function showed consistent agreement.
• The study demonstrated the feasibility of using acquired force/temperature data and transfer functions for noise elimination.

Conclusions:

• The proposed noise suppression method is effective for improving interferometric measurement resolution.
• The method provides a pathway for noise sensing and elimination in the Taiji program.
• This research contributes to the advancement of high-precision measurements for space-based gravitational wave detectors.