Experimental comparison of Raman and rf outcouplers for high-flux atom lasers

We study the properties of an atom laser beam derived from a Bose-Einstein condensate using three different outcouplers, one based on multistate radio-frequency transitions and two others based on Raman transitions capable of imparting momentum to the beam. We first summarize the differences that ar...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2010-01, Vol.81 (1), Article 013618
Main Authors: Debs, J. E., Döring, D., Altin, P. A., Figl, C., Dugué, J., Jeppesen, M., Schultz, J. T., Robins, N. P., Close, J. D.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
ATOMS
BEAMS
BOSE-EINSTEIN CONDENSATION
BOUND STATE
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMPARATIVE EVALUATIONS
ELECTROMAGNETIC RADIATION
EVALUATION
INTERFEROMETRY
LASERS
RADIATIONS
RADIOWAVE RADIATION
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Summary:We study the properties of an atom laser beam derived from a Bose-Einstein condensate using three different outcouplers, one based on multistate radio-frequency transitions and two others based on Raman transitions capable of imparting momentum to the beam. We first summarize the differences that arise in such systems, and how they may impact on the use of an atom laser in interferometry. Experimentally, we examine the formation of a bound state in all three outcouplers, a phenomenon which limits the atom laser flux, and find that a two-state Raman outcoupler is the preferred option for high-flux, low-divergence atom laser beams.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.81.013618