Academic Journal
View in EDS

Active Suppression of Differential Light Shift Drift in an Atom Gravimeter.

Bibliographic Details
Title: Active Suppression of Differential Light Shift Drift in an Atom Gravimeter.
Authors: Xu, Wei-Hao1,2 (AUTHOR), Chen, Xi1,2,3 (AUTHOR) lijinting@apm.ac.cn, Li, Jin-Ting1,2,3 (AUTHOR), Zhang, Dan-Fang1,2,4 (AUTHOR), Wang, Wen-Zhang1,2 (AUTHOR), Wei, Jia-Yi1,2 (AUTHOR), Zhong, Jia-Qi1,3 (AUTHOR), Tang, Biao1,4 (AUTHOR), Zhou, Lin1 (AUTHOR), Li, Run-Bing1,3 (AUTHOR), Wang, Jin1,3,4 (AUTHOR), Zhan, Min-Sheng1,3,4 (AUTHOR) mszhan@apm.ac.cn
Source: Sensors (14248220). Mar2026, Vol. 26 Issue 5, p1620. 14p.
Subject Terms: *Gravimeters (Geophysical instruments), *Optical modulators, *Gravimetry, *Interferometry, *Measurement
Abstract: Differential light shift (DLS) is an important error term that limits the atom interferometer's measurement precision, especially for the case of the electro-optic modulator (EOM)-based scheme, where multiple laser sidebands exist, and their ratios are hard to control synchronously. This article carried out an experimental and theoretical study on this subject. By conducting long-term gravity measurement, we find that the gravity exhibits drifts of about 13.13 μGal, and is strongly correlated to the Raman laser's sidebands. A model of the DLS-induced gravity error is established and a DLS compensation method is proposed to suppress the gravity drift to 2.54 μGal. Besides the compensation method, we propose a Dual-Sideband Ratio Locking scheme to more robustly eliminate the gravity measurement drift. By feeding back to both the EOM microwave power and the tapered amplifier's temperature, this method locks both the ±1 order sideband to a stability level of 10 − 5 , which corresponds to a gravity error of less than 0.1 μGal. Long-term gravity measurement is carried out after the locking method, showing a long-term stability of 1.6 μGal. The proposed methods will benefit the suppression of the DLS effect for high-precision atom interference measurement. [ABSTRACT FROM AUTHOR]
Database: Academic Search Index
FullText Text:
  Availability: 0
CustomLinks:
  – Url: https://resolver.ebsco.com/c/fiv2js/result?sid=EBSCO:asx&genre=article&issn=14248220&ISBN=&volume=26&issue=5&date=20260301&spage=1620&pages=1620-1633&title=Sensors (14248220)&atitle=Active%20Suppression%20of%20Differential%20Light%20Shift%20Drift%20in%20an%20Atom%20Gravimeter.&aulast=Xu%2C%20Wei-Hao&id=DOI:10.3390/s26051620
    Name: Full Text Finder (for New FTF UI) (ns324271)
    Category: fullText
    Text: Full Text Finder
    MouseOverText: Full Text Finder
Header DbId: asx
DbLabel: Academic Search Index
An: 192639047
RelevancyScore: 1411
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 1411.07177734375
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Active Suppression of Differential Light Shift Drift in an Atom Gravimeter.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Xu%2C+Wei-Hao%22">Xu, Wei-Hao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Xi%22">Chen, Xi</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> lijinting@apm.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Jin-Ting%22">Li, Jin-Ting</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Dan-Fang%22">Zhang, Dan-Fang</searchLink><relatesTo>1,2,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Wen-Zhang%22">Wang, Wen-Zhang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Jia-Yi%22">Wei, Jia-Yi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhong%2C+Jia-Qi%22">Zhong, Jia-Qi</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tang%2C+Biao%22">Tang, Biao</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Lin%22">Zhou, Lin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Run-Bing%22">Li, Run-Bing</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Jin%22">Wang, Jin</searchLink><relatesTo>1,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhan%2C+Min-Sheng%22">Zhan, Min-Sheng</searchLink><relatesTo>1,3,4</relatesTo> (AUTHOR)<i> mszhan@apm.ac.cn</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Sensors+%2814248220%29%22">Sensors (14248220)</searchLink>. Mar2026, Vol. 26 Issue 5, p1620. 14p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Gravimeters+%28Geophysical+instruments%29%22">Gravimeters (Geophysical instruments)</searchLink><br />*<searchLink fieldCode="DE" term="%22Optical+modulators%22">Optical modulators</searchLink><br />*<searchLink fieldCode="DE" term="%22Gravimetry%22">Gravimetry</searchLink><br />*<searchLink fieldCode="DE" term="%22Interferometry%22">Interferometry</searchLink><br />*<searchLink fieldCode="DE" term="%22Measurement%22">Measurement</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Differential light shift (DLS) is an important error term that limits the atom interferometer's measurement precision, especially for the case of the electro-optic modulator (EOM)-based scheme, where multiple laser sidebands exist, and their ratios are hard to control synchronously. This article carried out an experimental and theoretical study on this subject. By conducting long-term gravity measurement, we find that the gravity exhibits drifts of about 13.13 μGal, and is strongly correlated to the Raman laser's sidebands. A model of the DLS-induced gravity error is established and a DLS compensation method is proposed to suppress the gravity drift to 2.54 μGal. Besides the compensation method, we propose a Dual-Sideband Ratio Locking scheme to more robustly eliminate the gravity measurement drift. By feeding back to both the EOM microwave power and the tapered amplifier's temperature, this method locks both the ±1 order sideband to a stability level of 10 − 5 , which corresponds to a gravity error of less than 0.1 μGal. Long-term gravity measurement is carried out after the locking method, showing a long-term stability of 1.6 μGal. The proposed methods will benefit the suppression of the DLS effect for high-precision atom interference measurement. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asx&AN=192639047
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3390/s26051620
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 1620
    Subjects:
      – SubjectFull: Gravimeters (Geophysical instruments)
        Type: general
      – SubjectFull: Optical modulators
        Type: general
      – SubjectFull: Gravimetry
        Type: general
      – SubjectFull: Interferometry
        Type: general
      – SubjectFull: Measurement
        Type: general
    Titles:
      – TitleFull: Active Suppression of Differential Light Shift Drift in an Atom Gravimeter.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Xu, Wei-Hao
      – PersonEntity:
          Name:
            NameFull: Chen, Xi
      – PersonEntity:
          Name:
            NameFull: Li, Jin-Ting
      – PersonEntity:
          Name:
            NameFull: Zhang, Dan-Fang
      – PersonEntity:
          Name:
            NameFull: Wang, Wen-Zhang
      – PersonEntity:
          Name:
            NameFull: Wei, Jia-Yi
      – PersonEntity:
          Name:
            NameFull: Zhong, Jia-Qi
      – PersonEntity:
          Name:
            NameFull: Tang, Biao
      – PersonEntity:
          Name:
            NameFull: Zhou, Lin
      – PersonEntity:
          Name:
            NameFull: Li, Run-Bing
      – PersonEntity:
          Name:
            NameFull: Wang, Jin
      – PersonEntity:
          Name:
            NameFull: Zhan, Min-Sheng
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 14248220
          Numbering:
            – Type: volume
              Value: 26
            – Type: issue
              Value: 5
          Titles:
            – TitleFull: Sensors (14248220)
              Type: main
ResultId 1