Multireflection of cold atoms in a near-field optical funnel

被引:0
|
作者
Takamizawa, Akifumi [1 ]
Ito, Haruhiko [1 ]
Ohtsu, Motoichi [1 ,2 ]
机构
[1] Interdisciplinary Grad. Sch. Sci Eng, Tokyo Institute of Technology, 4259, Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
[2] ERATO, Japan Science and Technology Corp., 687-1 Tsuruma, Machida 194-0004, Japan
关键词
Absorption - Magnetooptical devices - Prisms - Reflection - Rubidium;
D O I
10.1143/jjap.41.6215
中图分类号
学科分类号
摘要
Multireflection of cold Rb atoms occurs inside a reversed triangular hollow prism with a blue-detuned optical near-field. We examine it with a probe light beam, using the frequency detuning and the diameter of an excitation light beam as parameters. In the first bounce, the number density of the reflected atoms reaches a maximum of 106 atom/cm3 at a blue detuning of 0.7 GHz when the beam diameter is 4 mm. The Rb atoms repeat reflection with a period of about 15 ms and an efficiency of 83% per bounce. A cold Rb atomic beam with a high flux of 4 × 1011 atom/(cm2·s) can be generated through a near-field optical funnel composed of the prism.
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页码:6215 / 6218
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