中国物理B ›› 2010, Vol. 19 ›› Issue (1): 14209-014209.doi: 10.1088/1674-1056/19/1/014209

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Effect of cavity dissipation on the emission spectrum of an atom interacting with a field in the dispersive approximation

高云峰1, 王海军2   

  1. (1)School of Physcial Science and Information Engineering, Liaocheng University, Liaocheng 252059, China;School of Medium and Communication, Liaocheng University, Liaocheng 252059, China; (2)School of Physcial Science and Information Engineering, Liaocheng University, Liaocheng 252059, China
  • 收稿日期:2009-03-27 修回日期:2009-05-21 出版日期:2010-01-15 发布日期:2010-01-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10574060).

Effect of cavity dissipation on the emission spectrum of an atom interacting with a field in the dispersive approximation

Wang Hai-Jun(王海军)a) and Gao Yun-Feng(高云峰)a)b)   

  1. a School of Physcial Science and Information Engineering, Liaocheng University, Liaocheng 252059, China; b School of Medium and Communication, Liaocheng University, Liaocheng 252059, China
  • Received:2009-03-27 Revised:2009-05-21 Online:2010-01-15 Published:2010-01-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10574060).

摘要: The emission spectrum of a two-level atom interacting dispersively with a single mode radiation field in the dissipative cavity is investigated. A general expression for the emission spectrum is derived. The numerical results for the initial field in coherent state are calculated. It is found that the spectrum structure is influenced significantly by the cavity damping constant \kappa , and the spectrum structure is dependent on the interaction time T when the cavity dissipation is present. Only one peak located at Ωa appears in the atomic spectra for larger T.

Abstract: The emission spectrum of a two-level atom interacting dispersively with a single mode radiation field in the dissipative cavity is investigated. A general expression for the emission spectrum is derived. The numerical results for the initial field in coherent state are calculated. It is found that the spectrum structure is influenced significantly by the cavity damping constant $\kappa$, and the spectrum structure is dependent on the interaction time T when the cavity dissipation is present. Only one peak located at $\omega_a$ appears in the atomic spectra for larger T.

Key words: emission spectrum, cavity dissipation, two-level atom

中图分类号:  (Photoionization and excitation)

  • 32.80.-t
32.50.+d (Fluorescence, phosphorescence (including quenching))