Laser guiding of cold molecules in a hollow optical fiber and continuous-wave cold molecular beam generation

doi:10.1088/1674-1056/21/3/033302

中国物理B ›› 2012, Vol. 21 ›› Issue (3): 33302-033302.doi: 10.1088/1674-1056/21/3/033302

刘润琴¹ ²,尹亚玲¹ ³,印建平¹

收稿日期:2011-01-07 修回日期:2011-04-13 出版日期:2012-02-15 发布日期:2012-02-15
通讯作者: 印建平,jpyin@phy.ecnu.edu.cn E-mail:jpyin@phy.ecnu.edu.cn

Laser guiding of cold molecules in a hollow optical fiber and continuous-wave cold molecular beam generation

Liu Run-Qin(刘润琴)^a)b), Yin Ya-Ling(尹亚玲)^a)c), and Yin Jian-Ping(印建平)^a)†

a. State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China;
b. Department of Physics, Kashgar Teachers College, Kashgar 844008, China;
c. Department of Physics, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China

Received:2011-01-07 Revised:2011-04-13 Online:2012-02-15 Published:2012-02-15
Contact: Yin Jian-Ping,jpyin@phy.ecnu.edu.cn E-mail:jpyin@phy.ecnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10804031, 10904037, 10434060, 10674047, 11034002, and 10904060), the National Basic Research Program of China (Grant Nos. 2006CB921604 and 2011CB921602), the Basic Key Program of Shanghai Municipality, China (Grant No. 07JC14017), the Shanghai Leading Academic Discipline Project, China (Grant No. B408), and the Jiangsu Provincial Projects for Postdoctoral Research Funds, China (Grant No. 0802009B).

摘要/Abstract

Abstract: A novel scheme for guiding arbitrary buffer-gas cooled neutral molecules in a hollow optical fiber (HOF) using a red-detuned HE₁₁ mode is proposed and analysed theoretically. We give the electromagnetic field distribution of the HE₁₁ mode in the HOF and calculate the optical potential of an I₂ molecule, and study the molecule guiding mechanism using a classical Monte Carlo simulation. Using a 6 kW input laser, an S-shape HOF with a 2 cm curvature radius for both bends, and an input molecular beam with a transverse temperature of 0.5 K and longitudinal temperature of 5 K, we obtain a guiding efficiency of ～0.126% for the scheme, and the transverse and longitudinal temperatures of the guided molecular beam are 1.9 mK and 0.5 K, respectively.

Key words: laser guiding, cold molecular beam

中图分类号: (Diffuse spectra; predissociation, photodissociation)

33.80.Gj

37.10.Mn (Slowing and cooling of molecules) 87.80.Cc (Optical trapping)

刘润琴, 尹亚玲, 印建平. [J]. 中国物理B, 2012, 21(3): 33302-033302.

Liu Run-Qin(刘润琴), Yin Ya-Ling(尹亚玲), and Yin Jian-Ping(印建平) . Laser guiding of cold molecules in a hollow optical fiber and continuous-wave cold molecular beam generation[J]. Chin. Phys. B, 2012, 21(3): 33302-033302.

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Laser guiding of cold molecules in a hollow optical fiber and continuous-wave cold molecular beam generation

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