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Abnormal Phenomenon of ac Stark splitting in Magneto-Optical Traps |
| ZHOU Shu-Yu; XU Zhen;ZHOU Shan-Yu;WANG Yu-Zhu |
| Key Laboratory for Quantum Optics and Centre for Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 |
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| Cite this article: |
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ZHOU Shu-Yu, XU Zhen, ZHOU Shan-Yu et al 2005 Chin. Phys. Lett. 22 1672-1675 |
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Abstract We experimentally study the ac Stark splitting in D2 line of cold 87Rb atoms. The frequency span between the Autler--Townes doublets is obviously larger than that derived from theoretical calculation. Two physical effects, which increase the effective Rabi frequency, contribute to the splitting broadening. First, atoms tend to distribute in strong field places of a inhomogeneous red-detuned light field. Second, atoms reabsorb scattered light when they are huge in number and high in density.
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| Keywords:
42.50.Hz
32.80.Rm
32.80.Pj
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Published: 01 July 2005
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| PACS: |
42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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32.80.Rm
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(Multiphoton ionization and excitation to highly excited states)
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32.80.Pj
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