Polarization and fundamental sensitivity of 39K(133Cs)-85Rb-21Ne co-magnetometers

作者:刘建华;靖东洋;庄琳;全伟;房建成;刘伍明 刊名:中国物理B:英文版 上传者:熊刚

【摘要】Thehybridopticalpumpingspinexchangerelaxationfree(HOPSERF)atomicco-magnetometersmakeultrahighsensitivitymeasurementofinertiaachievable.Thewallrelaxationratehasabigeffectonthepolarizationandfundamentalsensitivityfortheco-magnetometer;butitisoftenneglectedintheexperiments.However;thereisalmostnoworkaboutthesystematicanalysisoftheinfluencefactorsonthepolarizationandthefundamentalsensitivityoftheHOPSERFco-magnetometers.Herewesystematicallystudythepolarizationandthefundamentalsensitivityof39K-85Rb-21Neand133Cs-85Rb-21NeHOPSERFco-magnetometerswithlowpolarizationlimitandthewallrelaxationrate.The21Nenumberdensity;thepowerdensityandwavelengthofpumpbeamwillaffectthepolarizationgreatlybyaffectingthepumpingrateofthepumpbeam.WeobtainageneralformulaonthefundamentalsensitivityoftheHOPSERFco-magnetometersduetoshot-noiseandthefundamentalsensitivitychangeswithmultiplesystemicparameters;wherethesuitablenumberdensityofbuffergasandquenchgasmakethefundamentalsensitivityhighest.Thefundamentalsensitivity7.5355×10^-11rad·s^-1·Hz^-1/2of133Cs-85Rb-21Neco-magnetometerishigherthantheultimatetheoreticalsensitivity2×10^-10rad·s^-1·Hz^-1/2ofK-21Neco-magnetometer.

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Chin. Phys. B Vol. 29, No. 4 (2020) 043206 Polarization and fundamental sensitivity of 39K (133Cs)-lS5Rb-21Ne co-magnetometers* * Project supported by the National Key R&D Program of China (Grant No. 2016YFA0301500), the National Natural Science Foundation of China (Grant No. 61835013), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant Nos. XDB01020300 and XDB21030300). 7Corresponding author. E-mail: wliu@iphy.ac.cn © 2020 Chinese Physical Society and IOP Publishing Ltd Jian-Hua Liu(刘建华)Dong-Yang Jing(靖东%羊)门,Lin Zhuang(庄琳)4, Wei Quan(全伟)5, Jianchcng Fang(房建成)5, and Wu-Ming Liu(刘伍明)12^ ' Beijing National Laboratory for Condensed Matter Physics. Institute of Physics. Chinese Academy of Sciences. Beijing 1 (X) 19(). Chinn -School of Physical Sciences. University of Chinese Aciidemy of Sciences, Beijing 10019(), China ' School of Science. Beijing Technology and Business University, Beijing 100048, China ^School of Physics. Sun Yat-Sen University, Guangzhou 510275. China 'School of Instrument Science and Opto-Electronics Engineering, and Science and Technology on Inertial Laboratory, Beihang University. Beijing 10() 191. Chinn (Received 11 October 2019; revised manuscript received 28 February 2020; accepted manuscript online 9 March 2020) The hybrid optical pumping spin exchange relaxation free (HOPSERF) atomic co-magnetometers make ultrahigh sensitivity measurement of inertia achievable. The wall relaxation rate has a big effect on the pola

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