Two types of highly efficient electrostatic traps for single loading or multi-loading of polar molecules

doi:10.1088/1674-1056/ab7905

中国物理B ›› 2020, Vol. 29 ›› Issue (4): 43701-043701.doi: 10.1088/1674-1056/ab7905

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Two types of highly efficient electrostatic traps for single loading or multi-loading of polar molecules

Bin Wei(魏斌), Hengjiao Guo(郭恒娇), Yabing Ji(纪亚兵), Shunyong Hou(侯顺永), Jianping Yin(印建平)

State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

收稿日期:2019-12-16 修回日期:2020-02-21 出版日期:2020-04-05 发布日期:2020-04-05
通讯作者: Shunyong Hou, Jianping Yin E-mail:syhou@lps.ecnu.edu.cn;jpyin@phy.ecnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11834003, 91536218, 11034002, 11274114, 11504112, and 11874151), the National Key Basic Research and Development Program of China (Grant No. 2011CB921602), the Fundamental Research Funds for the Central Universities, China, Shanghai Pujiang Talents Plan, China (Grant No. 18PJ1403100), and Exploration Funds from the Shanghai Natural Science Foundation, China (Grant No. 18ZR1412700).

Two types of highly efficient electrostatic traps for single loading or multi-loading of polar molecules

Bin Wei(魏斌), Hengjiao Guo(郭恒娇), Yabing Ji(纪亚兵), Shunyong Hou(侯顺永), Jianping Yin(印建平)

State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

Received:2019-12-16 Revised:2020-02-21 Online:2020-04-05 Published:2020-04-05
Contact: Shunyong Hou, Jianping Yin E-mail:syhou@lps.ecnu.edu.cn;jpyin@phy.ecnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11834003, 91536218, 11034002, 11274114, 11504112, and 11874151), the National Key Basic Research and Development Program of China (Grant No. 2011CB921602), the Fundamental Research Funds for the Central Universities, China, Shanghai Pujiang Talents Plan, China (Grant No. 18PJ1403100), and Exploration Funds from the Shanghai Natural Science Foundation, China (Grant No. 18ZR1412700).

摘要/Abstract

摘要： Two novel electrostatic traps named octopole-based disk electrostatic trap (ODET) and tubular-based disk electrostatic trap (TDET) are proposed for trapping cold polar molecules in low-field-seeking states. Using MgF as the target molecule, single loading and multi-loading methods are numerically simulated with varied incident velocities of slow molecular beams in the two types of traps, respectively. In ODET, with an incident velocity of 10 m/s, a highest loading efficiency of 78.4% or 99.9% has been achieved under the single loading or multi-loading operation mode. In TDET, with an incident velocity of 11 m/s, a highest loading efficiency of 81.6% or 106.5% has been achieved using the two loading methods, respectively. With such high loading efficiencies, the trapped cold molecules can be applied in the researches of cold collisions, high precision spectroscopy, and precision measurements. Especially, together with a blue-detuned hollow beam, the new electrostatic traps proposed here offer a new platform for the following gradient-intensity cooling of MgF molecules, which may provide a new way to produce high density ultracold molecules.

关键词: cold molecules, electrostatic trapping, Monte Carlo simulations

Abstract: Two novel electrostatic traps named octopole-based disk electrostatic trap (ODET) and tubular-based disk electrostatic trap (TDET) are proposed for trapping cold polar molecules in low-field-seeking states. Using MgF as the target molecule, single loading and multi-loading methods are numerically simulated with varied incident velocities of slow molecular beams in the two types of traps, respectively. In ODET, with an incident velocity of 10 m/s, a highest loading efficiency of 78.4% or 99.9% has been achieved under the single loading or multi-loading operation mode. In TDET, with an incident velocity of 11 m/s, a highest loading efficiency of 81.6% or 106.5% has been achieved using the two loading methods, respectively. With such high loading efficiencies, the trapped cold molecules can be applied in the researches of cold collisions, high precision spectroscopy, and precision measurements. Especially, together with a blue-detuned hollow beam, the new electrostatic traps proposed here offer a new platform for the following gradient-intensity cooling of MgF molecules, which may provide a new way to produce high density ultracold molecules.

Key words: cold molecules, electrostatic trapping, Monte Carlo simulations

中图分类号: (Trapping of molecules)

37.10.Pq

32.60.+i (Zeeman and Stark effects) 37.10.Mn (Slowing and cooling of molecules)

魏斌, 郭恒娇, 纪亚兵, 侯顺永, 印建平. Two types of highly efficient electrostatic traps for single loading or multi-loading of polar molecules[J]. 中国物理B, 2020, 29(4): 43701-043701.

Bin Wei(魏斌), Hengjiao Guo(郭恒娇), Yabing Ji(纪亚兵), Shunyong Hou(侯顺永), Jianping Yin(印建平). Two types of highly efficient electrostatic traps for single loading or multi-loading of polar molecules[J]. Chin. Phys. B, 2020, 29(4): 43701-043701.

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Two types of highly efficient electrostatic traps for single loading or multi-loading of polar molecules

Two types of highly efficient electrostatic traps for single loading or multi-loading of polar molecules

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