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Stability of continuously pumped atom lasers

S. A. Haine·J. J. Hope·N. P. Robins·C. M. Savage
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Abstract

A multimode model of a continuously pumped atom laser is shown to be unstable below a critical value of the scattering length. Above the critical scattering length, the atom laser reaches a steady state, the stability of which increases with pumping. Below this limit the laser does not reach a steady state. This instability results from the competition between gain and loss for the excited states of the lasing mode. It will determine a fundamental limit for the linewidth of an atom laser beam.

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S. A. Haine, J. J. Hope, N. P. Robins, C. M. Savage. 2001-12-20. Stability of continuously pumped atom lasers. https://doi.org/10.1103/physrevlett.88.170403

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