集成高精度光钟的空间引力波天线激光干涉测量系统原理分析

Key Points

• This research aims to address the challenges of frequency noise suppression in space-based gravitational wave detection using a new design based on space-borne optical clocks.
• Developed a payload design incorporating space-borne optical clocks to replace traditional ultra-stable oscillators.
• Implemented two noise synchronization mechanisms: laser locking to atomic transition frequencies and optical frequency comb for microwave clock signal generation.
• Combined theoretical analysis and numerical simulations to validate the noise suppression performance in the 0.1mHz to 1Hz frequency band.
• Reduced laser frequency noise and clock noise by two and three orders of magnitude, respectively, in the millihertz band.
• Residual noise levels were significantly below the detection mission's required background noise across the target frequency range.
• The proposed design allows first-generation TDI technology to meet mission requirements without additional clock noise elimination steps.