中国物理B ›› 2011, Vol. 20 ›› Issue (3): 34206-034206.doi: 10.1088/1674-1056/20/3/034206

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Magnetic field measurement based on a stimulated two-photon Raman transition

周子超, 魏荣, 史春艳, 李唐, 王育竹   

  1. Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:2010-06-12 修回日期:2010-07-15 出版日期:2011-03-15 发布日期:2011-03-15
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2005CB724506), the National Natural Science Foundation of China (Grant Nos. 10604058 and 10974215), and by the Open Research Fund of State Key Laboratory of Precision Spectroscop

Magnetic field measurement based on a stimulated two-photon Raman transition

Zhou Zi-Chao(周子超),Wei Rong(魏荣),Shi Chun-Yan(史春艳), Li Tang(李唐),and Wang Yu-Zhu(王育竹)   

  1. Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2010-06-12 Revised:2010-07-15 Online:2011-03-15 Published:2011-03-15
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2005CB724506), the National Natural Science Foundation of China (Grant Nos. 10604058 and 10974215), and by the Open Research Fund of State Key Laboratory of Precision Spectroscop.

摘要: The magnetic field in the microwave interaction zone of the fountain atomic clock was measured by stimulated Raman transitions. By measuring the two-photon transition frequency between the Zeeman levels of the two ground states, we achieved a magnetic field measurement accuracy of the order of 0.28 nT. This method is immune to the Doppler shift and the AC Stark shift. The second order Zeeman shift of the fountain clock is 170.7×10-15, with the uncertainty of 7.2×10-16.

Abstract: The magnetic field in the microwave interaction zone of the fountain atomic clock was measured by stimulated Raman transitions. By measuring the two-photon transition frequency between the Zeeman levels of the two ground states, we achieved a magnetic field measurement accuracy of the order of 0.28 nT. This method is immune to the Doppler shift and the AC Stark shift. The second order Zeeman shift of the fountain clock is 170.7×10-15, with the uncertainty of 7.2×10-16.

Key words: fountain atomic clock, Raman transition, second order Zeeman shift

中图分类号:  (Stimulated Raman scattering; CARS)

  • 42.65.Dr
95.55.Sh (Auxiliary and recording instruments; clocks and frequency standards)