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CPT Magnetometer with Atomic Energy Level Modulation |
| LIU Guo-Bin1,2;DU Run-Chang1,2;LIU Chao-Yang1;GU Si-Hong1 |
| 1Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 4300712Graduate School, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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LIU Guo-Bin, DU Run-Chang, LIU Chao-Yang et al 2008 Chin. Phys. Lett. 25 472-474 |
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Abstract We propose and experimentally investigate a coherent population trapping state based magnetometer prototype with 87Rb atoms. Through modulating Zeeman sublevels with an ac magnetic field, not only a phase sensitive detection scheme suitable for miniature magnetometer is realized, but also the detection resolution of magnetic field intensity could be improved by
a factor of two. Our study result indicates that it is a promising low power consumption miniature sensitive low magnetic field sensor offering spatially resolved measurement at the sub-millimetre level.
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| Keywords:
32.60.+i
42.50.Gy
32.30.-r
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Received: 12 November 2007
Published: 30 January 2008
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| PACS: |
32.60.+i
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(Zeeman and Stark effects)
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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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32.30.-r
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(Atomic spectra?)
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