用于引力波探测的星间激光干涉测量模拟系统OACSTPCD
Inter-satellite Laser Interferometry Simulation System for Gravitational Wave Detection
星间激光干涉仪具有比地面干涉仪更长的干涉臂(106 km),能够探测更低频段0.1 mHz～1 Hz的引力波.星间激光干涉仪具有典型的应答式外差干涉仪结构,其本质是一个光学锁相环.在地面环境下搭建模拟的星间激光干涉仪,成功将从激光器的频率锁定到稳频的主激光器频率上.结果显示:锁相环的锁定时间超过2×104 s,满足了低频信号的探测条件;在较短位移和较长位移的不同条件下,干涉仪无粗大误差.经过分析得出:温度、气压等环境扰动带来的噪声是制约干涉仪精度的关键因素.
The inter-satellite laser interferometers have a longer interference arm(106 km)than the ground interferometer and can detect gravitational waves in lower frequency bands 0.1 mHz～1 Hz.The inter-satellite laser interferometer has a typical structure of a transponder-type heterodyne interferometer,and its essence is an optical phase-locked loop.The simulated inter-satellite laser interferometer is built on the ground,and the frequency of the slave laser is suc…查看全部>>
穆衡霖;李岩
清华大学精密仪器系,北京 100084清华大学精密仪器系,北京 100084
几何量计量引力波光学锁相环星间激光干涉低频信号
geometric metrologygravitational waveoptical phase-locking loopinter-satellite laser interferometrylow-frequency signal
《计量学报》 2024 (3)
311-317,7
国家重点研发计划(2020YFC2200101)
评论