Radiation pressure and laser cooling of a three-level atom in a ladder configuration

doi:10.1088/1009-1963/13/7/007

中国物理B ›› 2004, Vol. 13 ›› Issue (7): 1005-1012.doi: 10.1088/1009-1963/13/7/007

Radiation pressure and laser cooling of a three-level atom in a ladder configuration

谭磊, 汪志诚, 顾怀强

Department of Physics, Lanzhou University, Lanzhou 730000, China

收稿日期:2003-10-20 修回日期:2004-01-09 出版日期:2004-07-05 发布日期:2005-07-05
基金资助:
Project supported by the Doctoral Programme Foundation of the State Education Ministry of China (Grant No 1999073001).

Radiation pressure and laser cooling of a three-level atom in a ladder configuration

Tan Lei (谭磊), Wang Zhi-Cheng (汪志诚), Gu Huai-Qiang (顾怀强)

Department of Physics, Lanzhou University, Lanzhou 730000, China

Received:2003-10-20 Revised:2004-01-09 Online:2004-07-05 Published:2005-07-05
Supported by:
Project supported by the Doctoral Programme Foundation of the State Education Ministry of China (Grant No 1999073001).

摘要/Abstract

摘要： Radiation pressure and laser cooling of a moving three-level ladder-type atom in bichromatic travelling fields are considered. The dependence of the force on parameters such as detunings, Rabi frequencies and spontaneous decay rates is calculated numerically and shown graphically, and analytical expressions for the force are obtained for some special parameter values. It is shown that the radiation pressure shows Doppler-shifted resonance peaks resulting respectively from one-photon and two-photon transitions. Using the present scheme, Doppler cooling of sodium exploiting the 3{}^2S_{1/2}－3{}^2P_{3/2}－3{}^2D_{5/2} cascade transitions is investigated. It is found that temperatures lower than the Doppler limit can be achieved.

关键词: three-level atom, ladder configuration, radiation pressure, Doppler cooling

Abstract: Radiation pressure and laser cooling of a moving three-level ladder-type atom in bichromatic travelling fields are considered. The dependence of the force on parameters such as detunings, Rabi frequencies and spontaneous decay rates is calculated numerically and shown graphically, and analytical expressions for the force are obtained for some special parameter values. It is shown that the radiation pressure shows Doppler-shifted resonance peaks resulting respectively from one-photon and two-photon transitions. Using the present scheme, Doppler cooling of sodium exploiting the 3$^2$S$_{1/2}$－3$^2$P$_{3/2}$－3$^2$D$_{5/2}$ cascade transitions is investigated. It is found that temperatures lower than the Doppler limit can be achieved.

Key words: three-level atom, ladder configuration, radiation pressure, Doppler cooling

中图分类号: (Atom cooling methods)

37.10.De

32.70.Jz (Line shapes, widths, and shifts) 32.80.Wr (Other multiphoton processes)

谭磊, 汪志诚, 顾怀强. Radiation pressure and laser cooling of a three-level atom in a ladder configuration[J]. 中国物理B, 2004, 13(7): 1005-1012.

Tan Lei (谭磊), Wang Zhi-Cheng (汪志诚), Gu Huai-Qiang (顾怀强). Radiation pressure and laser cooling of a three-level atom in a ladder configuration[J]. Chinese Physics, 2004, 13(7): 1005-1012.

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Radiation pressure and laser cooling of a three-level atom in a ladder configuration

Radiation pressure and laser cooling of a three-level atom in a ladder configuration

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