| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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High quality electromagnetically induced transparency spectroscopy of 87Rb in a buffer gas cell with a magnetic field |
| Hong Cheng(成红)1,2, Han-Mu Wang(王汉睦)1,2, Shan-Shan Zhang(张珊珊)1,2, Pei-Pei Xin(辛培培)1,2, Jun Luo(罗军)1,2, Hong-Ping Liu(刘红平)1,2 |
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 |
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Abstract We have studied the phenomenon of electromagnetically induced transparency (EIT) of 87Rb vapor with a buffer gas in a magnetic field at room temperature. It is found that the spectral lines caused by the velocity selective optical pump effects get much weaker and wider when the sample cell is mixed with a 5-Torr N2 gas while the EIT signal is kept almost unchanged. A weighted least-square fit is also developed to remove the Doppler broadening completely. This spectral method provides a way to measure the Zeeman splitting with high resolution, for example, the Λ -type EIT resonance splits into four peaks on the D2 line of 87Rb in the thermal 2-cm vapor cell with a magnetic field along the electric field of the linearly polarized coupling laser. The high-resolution spectrum can be used to lock the laser to a given frequency by tuning the magnetic field.
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Received: 16 January 2017
Revised: 09 March 2017
Accepted manuscript online:
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PACS:
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42.50.Gy
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(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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32.60.+i
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(Zeeman and Stark effects)
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32.80.Qk
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(Coherent control of atomic interactions with photons)
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32.70.Jz
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(Line shapes, widths, and shifts)
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| Fund: Project supported by the National Key Basic Research Program of China (Grant No.2013CB922003) and the National Natural Science Foundation of China (Grant Nos.91421305,91121005,11674359,and 91436106). |
Corresponding Authors:
Hong-Ping Liu
E-mail: liuhongping@wipm.ac.cn
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Cite this article:
Hong Cheng(成红), Han-Mu Wang(王汉睦), Shan-Shan Zhang(张珊珊), Pei-Pei Xin(辛培培), Jun Luo(罗军), Hong-Ping Liu(刘红平) High quality electromagnetically induced transparency spectroscopy of 87Rb in a buffer gas cell with a magnetic field 2017 Chin. Phys. B 26 074204
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