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De-coupling the Coriolis effect from Raman beams alignment in a fountain atom gravimeter.

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Τίτλος: De-coupling the Coriolis effect from Raman beams alignment in a fountain atom gravimeter.
Συγγραφείς: Luo, Qin1 (AUTHOR) luoqin@hust.edu.cn, Zhou, Hang1 (AUTHOR) hangzhou@hust.edu.cn, Li, Li1 (AUTHOR), Chen, Lele1 (AUTHOR), Duan, Xiaochun1 (AUTHOR), Hu, Zhongkun1,2 (AUTHOR) luoqin@hust.edu.cn, Zhou, Minkang1 (AUTHOR) zmk@hust.edu.cn
Πηγή: Review of Scientific Instruments. Feb2026, Vol. 97 Issue 2, p1-6. 6p.
Θεματικοί όροι: *Gravimeters (Geophysical instruments), *Raman lasers, *Measurement uncertainty (Statistics), *Gravimetry, *Coriolis force, *Calibration
Περίληψη: The alignment of Raman beams is important for high-precision atom interferometry gravimeters, and tilt modulation experiments are usually carried out to calibrate the direction of Raman beams. However, the Coriolis effect could be changed during the tilt modulation experiment, thus introducing a deviation in the alignment of Raman beams. In this work, a method of rotating the sensor head by 90° to eliminate the impact of the Coriolis effect on Raman beams' alignment in a fountain atom gravimeter was proposed and demonstrated experimentally. Using this method, the alignment uncertainty of the Raman beams in the atom gravimeter was reduced to 11 μrad, which contributed an uncertainty of less than 0.1 μGal (1 μGal = 1 × 10−8 m/s2) to the gravity measurement. Further simulations explained the experimental results and pointed out a way to reduce the Coriolis effect in atom gravimeters. [ABSTRACT FROM AUTHOR]
Βάση Δεδομένων: Academic Search Index
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  Data: De-coupling the Coriolis effect from Raman beams alignment in a fountain atom gravimeter.
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  Data: <searchLink fieldCode="AR" term="%22Luo%2C+Qin%22">Luo, Qin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> luoqin@hust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Hang%22">Zhou, Hang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hangzhou@hust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Li%22">Li, Li</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Lele%22">Chen, Lele</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Duan%2C+Xiaochun%22">Duan, Xiaochun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Zhongkun%22">Hu, Zhongkun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> luoqin@hust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Minkang%22">Zhou, Minkang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zmk@hust.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Review+of+Scientific+Instruments%22">Review of Scientific Instruments</searchLink>. Feb2026, Vol. 97 Issue 2, p1-6. 6p.
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  Data: *<searchLink fieldCode="DE" term="%22Gravimeters+%28Geophysical+instruments%29%22">Gravimeters (Geophysical instruments)</searchLink><br />*<searchLink fieldCode="DE" term="%22Raman+lasers%22">Raman lasers</searchLink><br />*<searchLink fieldCode="DE" term="%22Measurement+uncertainty+%28Statistics%29%22">Measurement uncertainty (Statistics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Gravimetry%22">Gravimetry</searchLink><br />*<searchLink fieldCode="DE" term="%22Coriolis+force%22">Coriolis force</searchLink><br />*<searchLink fieldCode="DE" term="%22Calibration%22">Calibration</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The alignment of Raman beams is important for high-precision atom interferometry gravimeters, and tilt modulation experiments are usually carried out to calibrate the direction of Raman beams. However, the Coriolis effect could be changed during the tilt modulation experiment, thus introducing a deviation in the alignment of Raman beams. In this work, a method of rotating the sensor head by 90° to eliminate the impact of the Coriolis effect on Raman beams' alignment in a fountain atom gravimeter was proposed and demonstrated experimentally. Using this method, the alignment uncertainty of the Raman beams in the atom gravimeter was reduced to 11 μrad, which contributed an uncertainty of less than 0.1 μGal (1 μGal = 1 × 10−8 m/s2) to the gravity measurement. Further simulations explained the experimental results and pointed out a way to reduce the Coriolis effect in atom gravimeters. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1063/5.0308195
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 6
        StartPage: 1
    Subjects:
      – SubjectFull: Gravimeters (Geophysical instruments)
        Type: general
      – SubjectFull: Raman lasers
        Type: general
      – SubjectFull: Measurement uncertainty (Statistics)
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      – SubjectFull: Gravimetry
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      – SubjectFull: Coriolis force
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      – SubjectFull: Calibration
        Type: general
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      – TitleFull: De-coupling the Coriolis effect from Raman beams alignment in a fountain atom gravimeter.
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            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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            – TitleFull: Review of Scientific Instruments
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