论文标题
紧凑的主动振动隔离和倾斜稳定，用于便携式高精度原子量
Compact active vibration isolation and tilt stabilization for a portable high-precision atomic gravimeter
论文作者
论文摘要
在高精度原子重量表中，需要休息质量来提供重力参考，这通常是拉曼激光束的重新反射镜，该反射镜处理了特定自由捕获原子测试量的两个超细基地面状态。我们为复古反射镜构建了一个紧凑的主动反馈控制系统，该系统在垂直轴上提供振动隔离以及水平平面中的两个旋转稳定。主动反馈控制可在0.03至10 Hz的频率范围内垂直振动减少300倍，并在嘈杂的实验室环境中倾斜约$ \ pm $ 1 $ 1 $ 1 $μ$。该系统已经在便携式重量表上启用了高精度重力测量值，其灵敏度达到$ 6.4 \ times 10^{ - 8} $ g/$ g/$ \ sqrt {\ text {hz}} $，分辨率为$ 2.8 \ times 10^{ - 9} $ g之后的4000 s集成时间。
In high-precision atomic gravimeters, a rest mass is needed to provide a gravity reference, which is typically the retro-reflecting mirror of the Raman laser beams that addresses the two hyperfine ground states of the specific free-falling atomic test mass. We constructed a compact active feedback control system for the retro-reflecting mirror that provides vibration isolation in the vertical axis as well as two rotation stabilization in the horizontal plane. The active feedback control provides vertical vibration reduction of up to a factor of 300 in the frequency range of 0.03 to 10 Hz and tilt stabilization of approximately $\pm$ 1 $μ$rad in the noisy lab environment. This system has enabled high-precision gravity measurements on a portable gravimeter with sensitivity reaching $6.4\times 10^{-8}$ g/$\sqrt{\text{Hz}}$ and resolution of $2.8\times 10^{-9}$ g after an integration time of 4000 s.
