Laser guiding of cold molecules in a hollow optical fiber and continuous-wave cold molecular beam generation |
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| Authors: | Liu Run-Qin ab Yin Ya-Ling ac and Yin Jian-Ping |
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| Institution: | 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 |
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| Abstract: | A novel scheme for guiding arbitrary buffer-gas cooled neutral molecules in a hollow optical fiber(HOF) using a red-detuned HE 11 mode is proposed and analysed theoretically.We give the electromagnetic field distribution of the HE 11 mode in the HOF and calculate the optical potential of an I 2 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. |
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| Keywords: | laser guiding cold molecular beam |
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