The Vibration Compensation of an Atom Gravimeter
For most of atom interferometers, vibration isolation unit is applied to reduce vibration noise. In our experiment, instead of isolation, the vibration signals are monitored, combining with the sensitive function, the compensation phase shift for the atom interferometer is obtained. We focused on the correction over a wide spectrum rather than on “monochromatic” frequencies. The sensitivity of the atom gravimeter can be upgraded by a factor of more than two. Furthermore, we demonstrated that the atom interferometer can still produce a good measurement result without passive vibration isolation in extremely noisy environments by using vibration compensation.
Institute of Optics
Xu Aopeng,Kong Delong,Fu Zhijie,Wang Zhaoying,Lin Qiang. The Vibration Compensation of an Atom Gravimeter[J].Chinese Optics Letters,2019,17(7):07.