Accuracy Improvement of a Compact 85Rb Atom Gravimeter by Suppressing Laser Crosstalk and Light Shift

We design and implement a compact 85Rb atom gravimeter (AG). The diameter of the sensor head is 35 cm and the height is 65 cm; the optical and electronic systems are installed in four standard 3U cabinets. The measurement accuracy of this AG is improved by suppress laser crosstalk and light shift. I...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2023-07, Vol.23 (13), p.6115
Main Authors: Ge, Guiguo, Chen, Xi, Li, Jinting, Zhang, Danfang, He, Meng, Wang, Wenzhang, Zhou, Yang, Zhong, Jiaqi, Tang, Biao, Fang, Jie, Wang, Jin, Zhan, Mingsheng
Format: Article
Language:English
Subjects:
Accuracy
atom gravimeter
compact
Cooling
Crosstalk
Electronic systems
Gravimeters
Lasers
Raman lasers
Sensors
stability
Vibration measurement
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Summary:We design and implement a compact 85Rb atom gravimeter (AG). The diameter of the sensor head is 35 cm and the height is 65 cm; the optical and electronic systems are installed in four standard 3U cabinets. The measurement accuracy of this AG is improved by suppress laser crosstalk and light shift. In addition, the angle of the Raman laser reflector is adjusted and locked, and the attitude of the sensing head is automatically adjusted, and the vibration noise is also compensated. The comparison measurement results between this AG and the superconducting gravimeter indicate that its long-term stability is 0.65 μGal @50000 s.
ISSN:1424-8220
1424-8220
DOI:10.3390/s23136115