Phys. Rev. A 68, 023607 (2003) [7 pages]Mode selectivity and stability of continuously pumped atom lasersReceived 6 April 2003; published 25 August 2003 A semiclassical, multimode model of a continuously pumped atom laser is presented. For a spatially independent coupling process it is found that the system is unstable below a critical scattering length. As large atomic interactions will increase the phase diffusion of the lasing mode, it is desirable to obtain a stable atom laser with low nonlinearity. It is shown that spatially dependent pumping stabilizes the atom laser to a finite number of modes, and can induce single-mode operation. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.68.023607
DOI:
10.1103/PhysRevA.68.023607
PACS:
03.75.Pp, 03.65.Sq, 05.45.-a
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