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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper QFA2

A coherent atomic beam generator

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Abstract

The availability of ultracold atoms, as well as the recent demonstration of Bose condensation for trapped alkali, have lead to renewed efforts to produce a coherent atomic beam generator, or "atom laser."1-4 In this talk we discuss such a scheme based on a driven-damped sample of ultracold atoms in an extended, quasi-one-dimensional cavity.5 An important aspect of our scheme is that the atoms are subjected to the near-resonant dipole-dipole interaction, whose collisional cross section can be tuned over several orders of magnitude by varying the atom-field detuning and the precise geometry of the cavity. In addition, for transversally well confined atoms the dipole-dipole selection rules lead to a major simplification in that only two quantized levels of atomic motion need be considered explicitly, the other levels being inadequately treated as two thermal reservoirs.

© 1996 Optical Society of America

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