Report

A Well-Collimated Quasi-Continuous Atom Laser

Science  12 Mar 1999:
Vol. 283, Issue 5408, pp. 1706-1709
DOI: 10.1126/science.283.5408.1706

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Abstract

Extraction of sodium atoms from a trapped Bose-Einstein condensate (BEC) by a coherent, stimulated Raman process is demonstrated. Optical Raman pulses drive transitions between trapped and untrapped magnetic sublevels, giving the output-coupled BEC fraction a well-defined momentum. The pulsed output coupling can be run at such a rate that the extracted atomic wave packets strongly overlap, forming a highly directional, quasi-continuous matter wave.

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