Intense source of cold cesium atoms based on a two-dimensional magneto-optical trap with independent axial cooling and pushing

doi:10.1088/1674-1056/25/6/063701

中国物理B ›› 2016, Vol. 25 ›› Issue (6): 63701-063701.doi: 10.1088/1674-1056/25/6/063701

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Intense source of cold cesium atoms based on a two-dimensional magneto-optical trap with independent axial cooling and pushing

Jia-Qiang Huang(黄家强), Xue-Shu Yan(颜学术), Chen-Fei Wu(吴晨菲), Jian-Wei Zhang(张建伟), Li-Jun Wang(王力军)

1 Department of Physics, Tsinghua University, Beijing 100084, China;
2 Department of Precision Instrument, Tsinghua University, Beijing 100084, China;
3 Joint Institute for Measurement Science (JMI), Tsinghua University, Beijing 100084, China

收稿日期:2015-12-16 修回日期:2016-01-15 出版日期:2016-06-05 发布日期:2016-06-05
通讯作者: Li-Jun Wang E-mail:lwan@tsinghua.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11304177).

Intense source of cold cesium atoms based on a two-dimensional magneto-optical trap with independent axial cooling and pushing

Jia-Qiang Huang(黄家强)^1,3, Xue-Shu Yan(颜学术)^2,3, Chen-Fei Wu(吴晨菲)^1,3, Jian-Wei Zhang(张建伟)^2,3, Li-Jun Wang(王力军)^1,2,3

1 Department of Physics, Tsinghua University, Beijing 100084, China;
2 Department of Precision Instrument, Tsinghua University, Beijing 100084, China;
3 Joint Institute for Measurement Science (JMI), Tsinghua University, Beijing 100084, China

Received:2015-12-16 Revised:2016-01-15 Online:2016-06-05 Published:2016-06-05
Contact: Li-Jun Wang E-mail:lwan@tsinghua.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11304177).

摘要/Abstract

摘要：

We report our studies on an intense source of cold cesium atoms based on a two-dimensional (2D) magneto-optical trap (MOT) with independent axial cooling and pushing. The new-designed source, proposed as 2D-HP MOT, uses hollow laser beams for axial cooling and a thin pushing laser beam to extract a cold atomic beam. With the independent pushing beam, the atomic flux can be substantially optimized. The total atomic flux maximum obtained in the 2D-HP MOT is 4.02×10¹⁰ atoms/s, increased by 60 percent compared to the traditional 2D⁺ MOT in our experiment. Moreover, with the pushing power 10 μW and detuning 0Γ, the 2D-HP MOT can generate a rather intense atomic beam with the concomitant light shift suppressed by a factor of 20. The axial velocity distribution of the cold cesium beams centers at 6.8 m/s with an FMHW of about 2.8 m/s. The dependences of the atomic flux on the pushing power and detuning are studied in detail. The experimental results are in good agreement with the theoretical model.

关键词: cold atomic beam, magneto-optical trap, light shift

Abstract:

Key words: cold atomic beam, magneto-optical trap, light shift

中图分类号: (Atom traps and guides)

37.10.Gh

37.20.+j (Atomic and molecular beam sources and techniques) 37.10.De (Atom cooling methods)

黄家强, 颜学术, 吴晨菲, 张建伟, 王力军. Intense source of cold cesium atoms based on a two-dimensional magneto-optical trap with independent axial cooling and pushing[J]. 中国物理B, 2016, 25(6): 63701-063701.

Jia-Qiang Huang(黄家强), Xue-Shu Yan(颜学术), Chen-Fei Wu(吴晨菲), Jian-Wei Zhang(张建伟), Li-Jun Wang(王力军). Intense source of cold cesium atoms based on a two-dimensional magneto-optical trap with independent axial cooling and pushing[J]. Chin. Phys. B, 2016, 25(6): 63701-063701.

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Intense source of cold cesium atoms based on a two-dimensional magneto-optical trap with independent axial cooling and pushing

Intense source of cold cesium atoms based on a two-dimensional magneto-optical trap with independent axial cooling and pushing

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