| 双色激光场对运动原子的激光冷却 |
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| 引用本文： | 谭磊,张琴,汪志诚.双色激光场对运动原子的激光冷却[J].兰州大学学报(自然科学版),2006,42(5):96-100. |
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| 作者姓名： | 谭磊 张琴 汪志诚 |
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| 作者单位： | 1. 兰州大学,物理科学与技术学院,甘肃,兰州,730000;兰州大学,数学与统计学院,甘肃,兰州,730000
2. 兰州大学,物理科学与技术学院,甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金，兰州大学校科研和教改项目 |
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| 摘 要： | 研究了双色激光场对运动三能级原子的激光冷却,通过数值计算,分别得到了在不同光强、不同频率、不同传播方向条件下,原子在双色场中冷却的最终温度与双光子失谐的关系.结果表明,当双色激光场的传播方向相同时,冷却原子可以得到更低的温度;当双光子跃迁过程加强时,原子可以实现较单光子过程更低的温度.
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| 关 键 词： | 双色激光场 三能级原子 多普勒冷却 |
| 文章编号： | 0455-2059（2006）05-0096-05 |
| 收稿时间： | 05 10 2005 12:00AM |
| 修稿时间： | 2005-05-102005-12-01 |
Laser cooling of a moving atom in a bichromatical travelling field |
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| TAN Lei,ZHANG Qin,WANG Zhi-cheng.Laser cooling of a moving atom in a bichromatical travelling field[J].Journal of Lanzhou University(Natural Science),2006,42(5):96-100. |
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| Authors: | TAN Lei ZHANG Qin WANG Zhi-cheng |
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| Institution: | 1. School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China; 2. School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | A theoretical study is made of the Doppler cooling of a moving three-level atom coupled to bichromatical traveling fields. The dependences of the equilibrium temperature of the atom on two-photon detunings are calculated numerically under conditions of different laser intensity, frequencies and propagational direction. It is shown that temperatures lower than the one in the one-photon processes can be achieved in the enhancement of the two-photon processes. |
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| Keywords: | bichromatical traveling field three-level atom Doppler cooling |
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