中国物理B ›› 2018, Vol. 27 ›› Issue (9): 94205-094205.doi: 10.1088/1674-1056/27/9/094205

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Laser frequency offset-locking using electromagnetically induced transparency spectroscopy of 85Rb in magnetic field

Han-Mu Wang(王汉睦), Hong Cheng(成红), Shan-Shan Zhang(张珊珊), Pei-Pei Xin(辛培培), Zi-Shan Xu(徐子珊), Hong-Ping Liu(刘红平)   

  1. 1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2018-01-22 修回日期:2018-05-07 出版日期:2018-09-05 发布日期:2018-09-05
  • 通讯作者: Hong-Ping Liu E-mail:liuhongping@wipm.ac.cn
  • 基金资助:

    Project supported by the National Key Basic Research Program of China (Grant No. 2013CB922003) and the National Natural Science Foundation of China (Grant Nos. 91421305, 91121005, and 11174329).

Laser frequency offset-locking using electromagnetically induced transparency spectroscopy of 85Rb in magnetic field

Han-Mu Wang(王汉睦)1,2, Hong Cheng(成红)1,2, Shan-Shan Zhang(张珊珊)1,2, Pei-Pei Xin(辛培培)1,2, Zi-Shan Xu(徐子珊)1,2, Hong-Ping Liu(刘红平)1,2   

  1. 1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-01-22 Revised:2018-05-07 Online:2018-09-05 Published:2018-09-05
  • Contact: Hong-Ping Liu E-mail:liuhongping@wipm.ac.cn
  • Supported by:

    Project supported by the National Key Basic Research Program of China (Grant No. 2013CB922003) and the National Natural Science Foundation of China (Grant Nos. 91421305, 91121005, and 11174329).

摘要:

We have experimentally offset-locked the frequencies of two lasers using electromagnetically induced transparency (EIT) spectroscopy of 85Rb vapor with a buffer gas in a magnetic field at room temperature. The magnetic field is generated by a permanent magnet mounted on a translation stage and its field magnitude can be varied by adjusting the distance between the magnet and Rb cell, which maps the laser locking frequency to the space position of the magnet. This frequency-space mapping technique provides an unambiguous daily laser frequency detuning operation with high accuracy. A repeatability of less than 0.5 MHz is achieved with the locking frequency detuned up to 184 MHz when the magnetic field varies from 0 up to 80 G.

关键词: electromagnetically induced transparency, offset-lock, rubidium atom, magnetic field

Abstract:

We have experimentally offset-locked the frequencies of two lasers using electromagnetically induced transparency (EIT) spectroscopy of 85Rb vapor with a buffer gas in a magnetic field at room temperature. The magnetic field is generated by a permanent magnet mounted on a translation stage and its field magnitude can be varied by adjusting the distance between the magnet and Rb cell, which maps the laser locking frequency to the space position of the magnet. This frequency-space mapping technique provides an unambiguous daily laser frequency detuning operation with high accuracy. A repeatability of less than 0.5 MHz is achieved with the locking frequency detuned up to 184 MHz when the magnetic field varies from 0 up to 80 G.

Key words: electromagnetically induced transparency, offset-lock, rubidium atom, magnetic field

中图分类号:  (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

  • 42.50.Gy
32.60.+i (Zeeman and Stark effects) 32.10.Fn (Fine and hyperfine structure) 32.80.Xx (Level crossing and optical pumping)