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    • 3. 发明公开
    • ATOMIC INTERFEROMETRIC ACCELEROMETER WITH ENHANCED VIBRATIONAL STABILITY
    • 具有增强的振动稳定性的原子干涉加速度计
    • EP3239722A1
    • 2017-11-01
    • EP17163450.4
    • 2017-03-28
    • Honeywell International Inc.
    • COMPTON, Robert
    • G01P15/093G01P15/08
    • G01V7/00G01B9/02003G01B9/02045G01B2290/25G01B2290/70G01N21/64G01P15/0802G01P15/093G01V7/02
    • An atomic interferometric accelerometer comprises a laser that emits a pulsed beam at a first frequency, an electro-optic modulator that receives the beam, and a vacuum cell in communication with the electro-optic modulator. The electro-optic modulator outputs a first optical signal corresponding to the beam at the first frequency and a second optical signal having a second frequency different from the first frequency. The vacuum cell has a chamber for laser cooled atoms. The vacuum cell receives the optical signals such that they propagate in a direction that passes through the atoms. A piezo mirror retro-reflects the optical signals back through the vacuum cell in a counter-propagating direction. The piezo mirror is driven with substantially constant velocity during a beam pulse, thereby imparting a Doppler shift to the retro-reflected optical signals to create two non-symmetric counter-propagating lightwave pairs. One of the lightwave pairs supports interferometry while the other is non-resonant.
    • 原子干涉加速度计包括以第一频率发射脉冲束的激光器,接收该束的电光调制器以及与电光调制器通信的真空单元。 电光调制器输出对应于第一频率的光束的第一光信号和具有不同于第一频率的第二频率的第二光信号。 真空室具有用于激光冷却原子的腔室。 真空室接收光学信号,使得它们沿穿过原子的方向传播。 压电反射镜以逆向传播的方向将光信号反射回真空室。 在光束脉冲期间以基本上恒定的速度驱动压电反射镜,从而将多普勒频移赋予向后反射的光信号以产生两个不对称的反向传播光波对。 其中一个光波对支持干涉测量,另一个非共振。