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

作　　者：Jian-Hua Liu Dong-Yang Jing Lin Zhuang Wei Quan Jiancheng Fang Wu-Ming Liu 刘建华;靖东洋;庄琳;全伟;房建成;刘伍明(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,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 100191,China)

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [2]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China [3]School of Science,Beijing Technology and Business University,Beijing 100048,China [4]School of Physics,Sun Yat-Sen University,Guangzhou 510275,China [5]School of Instrument Science and Opto-Electronics Engineering,and Science and Technology on Inertial Laboratory,Beihang University,Beijing 100191,China

出　　处：《Chinese Physics B》2020年第4期272-283,共12页中国物理B（英文版）

基　　金：Project supported by the National Key R&D Program of China(Grant No.2016YFA0301500);the National Natural Science Foundation of China(Grant No.61835013);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant Nos.XDB01020300 and XDB21030300)。

摘　　要：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 polarization and fundamental sensitivity for the co-magnetometer,but it is often neglected in the experiments.However,there is almost no work about the systematic analysis of the influence factors on the polarization and the fundamental sensitivity of the HOPSERF co-magnetometers.Here we systematically study the polarization and the fundamental sensitivity of 39K-85Rb-21Ne and 133Cs-85Rb-21Ne HOPSERF co-magnetometers with low polarization limit and the wall relaxation rate.The 21Ne number density,the power density and wavelength of pump beam will affect the polarization greatly by affecting the pumping rate of the pump beam.We obtain a general formula on the fundamental sensitivity of the HOPSERF co-magnetometers due to shot-noise and the fundamental sensitivity changes with multiple systemic parameters,where the suitable number density of buffer gas and quench gas make the fundamental sensitivity highest.The fundamental sensitivity 7.5355×10^-11 rad·s^-1·Hz^-1/2 of 133Cs-85Rb-21Ne co-magnetometer is higher than the ultimate theoretical sensitivity 2×10^-10 rad·s^-1·Hz^-1/2 of K-21Ne co-magnetometer.

关 键 词：hybrid optical PUMPING SPIN exchange RELAXATION free co-magnetometer wall RELAXATION rate 

分 类 号：TM936[电气工程—电力电子与电力传动]