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

作　　者：刘润琴 尹亚玲 印建平 

机构地区：[1]State Key Laboratory of Precision Spectroscopy,Department of Physics,East China Normal University [2]Department of Physics,Kashgar Teachers College [3]Department of Physics,National Laboratory of Solid State Microstructures,Nanjing University

出　　处：《Chinese Physics B》2012年第3期185-190,共6页中国物理B（英文版）

基　　金：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);the Jiangsu Provincial Projects for Postdoctoral Research Funds, China (Grant No. 0802009B)

摘　　要：A novel scheme for guiding arbitrary buffer-gas cooled neutral molecules in a hollow optical fiber （HOF） using a red-detuned HEll mode is proposed and analysed theoretically. We give the electromagnetic field distribution of the HEll mode in the HOF and calculate the optical potential of an 12 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.A novel scheme for guiding arbitrary buffer-gas cooled neutral molecules in a hollow optical fiber （HOF） using a red-detuned HEll mode is proposed and analysed theoretically. We give the electromagnetic field distribution of the HEll mode in the HOF and calculate the optical potential of an 12 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.

关 键 词：laser guiding cold molecular beam 

分 类 号：O561[理学—原子与分子物理]