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3-D simulation analysis of laser-collimating Cr atomic beam
Author(s): 
Pages: 605-610
Year: Issue:  6
Journal: Laser & Infrared

Keyword:  Monte Carlo methodlaser collimating3-D simulation analysisCr atomic beam;
Abstract: In order to acquire high collimating neutral Cr atomic beam,a laser collimating field is designed which is composed of three groups of laser beams to collimate high temperature Cr atomic beam.To reflect better the uncertain-ty of atomic motion in actual status and the influence of atomic isotopes on experiments,Monte Carlo random method is used to simulate the atomic initial state in the actual state.Based on stress distribution of atoms in the laser collimating field,motion characteristics of neutral Cr atomic beam in the actual state are quantitatively analyzed under the laser collimating field,and this motion path in the three-dimensional space and three-dimensional distribution of atomic landing point status are analyzed.The results show that the maximum divergency angle decreases to 1 .5 mrad in x di-rection and decreases to 1 .6 mrad in y direction after collimating Cr atomic beam,and atomic flux increases twice.Study results provide more detailed data for experiment and more ideal cold atomic beam for further more pre-cise nanometer grating and nanodots.
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