中国物理B ›› 2007, Vol. 16 ›› Issue (12): 3647-3654.doi: 10.1088/1009-1963/16/12/016

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Novel electrostatic trap for cold polar molecules

马 慧1, 印建平1, 许雪艳2   

  1. (1)Key Laboratory for Optical and Magnetic Resonance Spectroscopy of the Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China; (2)Key Laboratory for Optical and Magnetic Resonance Spectroscopy of the Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China;Department of Physics, Chaohu College, Chaohu 238000, China
  • 出版日期:2007-12-20 发布日期:2007-12-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10174050, 10374029, 10434060 and 10674047), the National Basic Research Program of China (Grant No 2006CB921604), the Science and Technology Commission of Shanghai Municipali

Novel electrostatic trap for cold polar molecules

Xu Xue-Yan (许雪艳)a)b), Ma Hui (马慧)a), and Yin Jian-Ping (印建平)a)†   

  1. a Key Laboratory for Optical and Magnetic Resonance Spectroscopy of the Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China; b Department of Physics, Chaohu College, Chaohu 238000, China
  • Online:2007-12-20 Published:2007-12-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10174050, 10374029, 10434060 and 10674047), the National Basic Research Program of China (Grant No 2006CB921604), the Science and Technology Commission of Shanghai Municipali

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摘要： We propose a novel scheme in which cold polar molecules are trapped by an electrostatic field generated by the combination of a pair of parallel transparent electrodes (i.e., two infinite transparent plates) and a ring electrode (i.e., a ring wire). The spatial distributions of the electrostatic fields from the above charged wire and the charged plates and the corresponding Stark potentials for cold CO molecules are calculated; the dependences of the trap centre position on the geometric parameters of the electrode are analysed. We also discuss the loading process of cold molecules from a cold molecular beam into our trap. This study shows that the proposed scheme is not only simple and convenient to trap, manipulate and control cold polar molecules in weak-field-seeking states, but also provides an opportunity to study cold collisions and collective quantum effects in a variety of cold molecular systems, etc.

关键词: electrostatic trap, cold polar molecules

Abstract: We propose a novel scheme in which cold polar molecules are trapped by an electrostatic field generated by the combination of a pair of parallel transparent electrodes (i.e., two infinite transparent plates) and a ring electrode (i.e., a ring wire). The spatial distributions of the electrostatic fields from the above charged wire and the charged plates and the corresponding Stark potentials for cold CO molecules are calculated; the dependences of the trap centre position on the geometric parameters of the electrode are analysed. We also discuss the loading process of cold molecules from a cold molecular beam into our trap. This study shows that the proposed scheme is not only simple and convenient to trap, manipulate and control cold polar molecules in weak-field-seeking states, but also provides an opportunity to study cold collisions and collective quantum effects in a variety of cold molecular systems, etc.

Key words: electrostatic trap, cold polar molecules

中图分类号:  (Slowing and cooling of molecules)

  • 37.10.Mn