中国物理B ›› 2017, Vol. 26 ›› Issue (10): 100701-100701.doi: 10.1088/1674-1056/26/10/100701

• GENERAL • 上一篇    下一篇

Indirect pumping bell-bloom magnetometer

Meng-Bing Wang(王梦冰), Da-Fa Zhao(赵大法), Gui-Ying Zhang(张桂迎), Kai-Feng Zhao(赵凯锋)   

  1. 1. Institute of Modern Physics, Fudan University, Shanghai 200433, China;
    2. Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China;
    3. Department of Applied Physics, Zhejiang University of Technology, Hangzhou 310023, China
  • 收稿日期:2017-04-10 修回日期:2017-06-08 出版日期:2017-10-05 发布日期:2017-10-05
  • 通讯作者: Kai-Feng Zhao E-mail:zhaokf@fudan.edu.cn
  • 基金资助:
    Project supported by the Natural Science Foundation of Shanghai (Grant No. 16ZR1402700), the National Natural Science Foundation of China (Grant No. 91636102), and the National Key Research and Development Program of China (Grant No. 2016YFA0302000).

Indirect pumping bell-bloom magnetometer

Meng-Bing Wang(王梦冰)1, Da-Fa Zhao(赵大法)2, Gui-Ying Zhang(张桂迎)1,3, Kai-Feng Zhao(赵凯锋)1   

  1. 1. Institute of Modern Physics, Fudan University, Shanghai 200433, China;
    2. Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China;
    3. Department of Applied Physics, Zhejiang University of Technology, Hangzhou 310023, China
  • Received:2017-04-10 Revised:2017-06-08 Online:2017-10-05 Published:2017-10-05
  • Contact: Kai-Feng Zhao E-mail:zhaokf@fudan.edu.cn
  • Supported by:
    Project supported by the Natural Science Foundation of Shanghai (Grant No. 16ZR1402700), the National Natural Science Foundation of China (Grant No. 91636102), and the National Key Research and Development Program of China (Grant No. 2016YFA0302000).

摘要: When the ground state hyperfine splitting of alkali metal vapor atoms is well optically resolved, the spin coherence on one hyperfine sublevel can be generated directly or indirectly by pumping the same or the other sublevel respectively. We experimentally studied the pump power dependence of the field response of a Bell-Bloom magnetometer for the two pumping schemes in a paraffin coated 87Rb vapor cell. We find that although the maximum field response is achieved by combining the two pumping schemes, indirect pumping alone can do nearly as good while being much simpler to operate. We have achieved a sensitivity of 100 fT/Hz1/2 with a single indirect pump at room temperature.

关键词: indirect pumping, anti-relaxation coating, power broadening, magnetometry

Abstract: When the ground state hyperfine splitting of alkali metal vapor atoms is well optically resolved, the spin coherence on one hyperfine sublevel can be generated directly or indirectly by pumping the same or the other sublevel respectively. We experimentally studied the pump power dependence of the field response of a Bell-Bloom magnetometer for the two pumping schemes in a paraffin coated 87Rb vapor cell. We find that although the maximum field response is achieved by combining the two pumping schemes, indirect pumping alone can do nearly as good while being much simpler to operate. We have achieved a sensitivity of 100 fT/Hz1/2 with a single indirect pump at room temperature.

Key words: indirect pumping, anti-relaxation coating, power broadening, magnetometry

中图分类号:  (Magnetometers for magnetic field measurements)

  • 07.55.Ge
32.80.Xx (Level crossing and optical pumping) 76.60.Es (Relaxation effects) 76.70.Hb (Optically detected magnetic resonance (ODMR))