Observation of collimation and decollimation of an atomic beam in a misaligned standing wave |
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Authors: | Y. Z. Wang L. Liu X. Z. Chen X. J. Wang S. W. Fang W. Q. Cai S. Y. Zhou Y. S. Liu |
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Affiliation: | (1) Joint Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800-211, 201800 Shanghai, People's Republic of China |
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Abstract: | This paper reports an experimental study on the collimation and decollimation of an atomic beam in a misaligned standing wave, in which the effective detuning caused by the Doppler effect is affected by the longitudinal velocity of the atomic beam. The experiment shows that in a strong field with red detuning between laser field and atomic transition frequency, laser heating in a normal standing wave becomes laser cooling in a misaligned standing wave for an approriate misalignment angle. For blue detuning, laser cooling in a standing wave can also become laser heating in a misaligned standing wave for an appropriate condition. These results ca be used in controling atomic motion. |
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Keywords: | 32.80.Pj 42.50.Vk |
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