中国物理B ›› 2011, Vol. 20 ›› Issue (12): 123701-123701.doi: 10.1088/1674-1056/20/12/123701

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Dependence of loading time on control parameters in a standard vapour–loaded magneto–optical trap

张一驰, 武寄洲, 李玉清, 马杰, 汪丽蓉, 赵延霆, 肖连团, 贾锁堂   

  1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China
  • 收稿日期:2011-05-28 修回日期:2011-06-20 出版日期:2011-12-15 发布日期:2011-12-15
  • 基金资助:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2009AA01Z319), the National Basic Research Program of China (Grant No. 2006CB921603), the National Natural Science Foundation of China (Grant Nos. 61008012, 11074154, 10934004, 60978018, 60978001, and 60808009), the Natural Science Foundation of Shanxi Province of China (Grant No. 2009011059-2), the National Natural Science Foundation for Excellent Research Team (Grant No. 60821004), the New Teacher Foundation of the Ministry of Education of China (Grant No. 20101401120004), and the Natural Science Foundation of Shanxi Province of China (Grant No. 2009011059-2).

Dependence of loading time on control parameters in a standard vapour–loaded magneto–optical trap

Zhang Yi-Chi(张一驰), Wu Ji-Zhou(武寄洲), Li Yu-Qing(李玉清), Ma Jie(马杰)†,Wang Li-Rong(汪丽蓉), Zhao Yan-Ting(赵延霆), Xiao Lian-Tuan(肖连团), and Jia Suo-Tang(贾锁堂)   

  1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China
  • Received:2011-05-28 Revised:2011-06-20 Online:2011-12-15 Published:2011-12-15
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2009AA01Z319), the National Basic Research Program of China (Grant No. 2006CB921603), the National Natural Science Foundation of China (Grant Nos. 61008012, 11074154, 10934004, 60978018, 60978001, and 60808009), the Natural Science Foundation of Shanxi Province of China (Grant No. 2009011059-2), the National Natural Science Foundation for Excellent Research Team (Grant No. 60821004), the New Teacher Foundation of the Ministry of Education of China (Grant No. 20101401120004), and the Natural Science Foundation of Shanxi Province of China (Grant No. 2009011059-2).

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摘要： Loading time is one of the most important dynamic characteristics of a magneto-optical trap. In this paper, we primarily report on a detailed experimental study of the effects of some magneto-optical trap control parameters on loading time, including the background vacuum pressure, the magnetic field gradient, and the intensities of trapping and repumping lasers. We compare the results with previous theoretical and experimental results, and give qualitative analysis. These experimental investigations offer some useful guidelines to control the loading time of magneto-optical traps. The controllable loading time achieved is helpful to enhance the signal-to-noise ratio of photoassociation spectroscopy, which is remarkably improved from 7 to 28.6.

Abstract: Loading time is one of the most important dynamic characteristics of a magneto-optical trap. In this paper, we primarily report on a detailed experimental study of the effects of some magneto-optical trap control parameters on loading time, including the background vacuum pressure, the magnetic field gradient, and the intensities of trapping and repumping lasers. We compare the results with previous theoretical and experimental results, and give qualitative analysis. These experimental investigations offer some useful guidelines to control the loading time of magneto-optical traps. The controllable loading time achieved is helpful to enhance the signal-to-noise ratio of photoassociation spectroscopy, which is remarkably improved from 7 to 28.6.

Key words: cold atoms, loading time, magneto-optical trap

中图分类号:  (Atom cooling methods)

  • 37.10.De
34.35.+a (Interactions of atoms and molecules with surfaces) 34.10.+x (General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))