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Acta Physica Sinica

LASER COOLING OF AN ATOMIC BEAM WITH HIGH EFFICIENCY

Liang Liu, Chen Hong-xin, Yuzhu Wang, 中国科学院上海光学精密机械研究所;华东师范大学量子光学联合开放实验室,上海201800

Published Jan 1, 1993• 1 citation
Publisher

Abstract

In this paper, we calculate the radiation force on a two-level atom, whose levels are modulated by two far off resonance travelling wave fields, interacting with a near resonance travelling wave field. The results show that with appropriate conditions, the force can be much larger than spontaneous radiation force and then can be used in laser cooling with high efficiency.

DOI
10.7498/aps.42.1762

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In this paper, we calculate the radiation force on a two-level atom, whose levels are modulated by two far off resonance travelling wave fields, interacting with a near resonance travelling wave field. The results show that with appropriate conditions, the force can be much larger than spontaneous radiation force and then can be used in laser cooling with high efficiency.
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The radiation force on a moving atom in a bichromatical travelling field is investigated in this paper. The relation of the atomic stimulated transition rate and the radiation force on the atom with its velocity in a bichromatical travelling wave is obtained by numberical calculation. Compared with that in a monochromatical travelling or a standing wave, the result in the bichromatical field have its own character, which is useful in the investigation of laser cooling of neutral atoms, selection of atomic velocity and atomic mometum diffusion.
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