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 Yin Ya-Ling Yin Jian-Ping |
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| Affiliation: | State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China;Department of Physics, Kashgar Teachers College, Kashgar 844008, China;State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China;Department of Physics, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, 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 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. |
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| Keywords: | laser guiding cold molecular beam |
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