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Chin. Phys. B, 2009, Vol. 18(8): 3395-3403    DOI: 10.1088/1674-1056/18/8/045
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Kinetic theory of (2+4)-level atom in $\sigma^+-\sigma^-$ laser fields

Yu Chuang(于闯), Yu De-Shui(于得水), and Chen Jing-Biao(陈景标)
Institute of Quantum Electronics, School of Electronics Engineering \& Computer Science, Peking University, Beijing 100871, China
Abstract  The kinetic theory of (2+4)-level atoms in $\sigma^+-\sigma^-$ laser fields is presented. We systemically discuss friction coefficient, momentum diffusion tensor and atomic temperature based on the Fokker--Planck equation. This cooling system is much like that of a (1+3)-level atom, and the temperature is still limited to the Doppler temperature. Since this cooling system has not been investigated before, this work may be regarded as a necessary complement to the laser cooling theory.
Keywords:  laser cooling      Fokker--Planck equation      quantum optics  
Received:  18 July 2008      Revised:  21 April 2009      Accepted manuscript online: 
PACS:  37.10.De (Atom cooling methods)  
  31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)  
Fund: Project supported by the National Fundamental Research Programme of China (Grants No 2005CB724500).

Cite this article: 

Yu Chuang(于闯), Yu De-Shui(于得水), and Chen Jing-Biao(陈景标) Kinetic theory of (2+4)-level atom in $\sigma^+-\sigma^-$ laser fields 2009 Chin. Phys. B 18 3395

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