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arXiv · 0709.1017

A multibeam atom laser: coherent atom beam splitting from a single far detuned laser

J. Dugué·G. Dennis·M. Jeppesen·M. T. Johnsson·C. Figl·N. P. Robins·J. D. Close
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Abstract

We report the experimental realisation of a multibeam atom laser. A single continuous atom laser is outcoupled from a Bose-Einstein condensate (BEC) via an optical Raman transition. The atom laser is subsequently split into up to five atomic beams with slightly different momenta, resulting in multiple, nearly co-propagating, coherent beams which could be of use in interferometric experiments. The splitting process itself is a novel realization of Bragg diffraction, driven by each of the optical Raman laser beams independently. This presents a significantly simpler implementation of an atomic beam splitter, one of the main elements of coherent atom optics.

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J. Dugué, G. Dennis, M. Jeppesen, M. T. Johnsson, C. Figl, N. P. Robins, J. D. Close. 2007-09-07. A multibeam atom laser: coherent atom beam splitting from a single far detuned laser. https://doi.org/10.1103/physreva.77.031603

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