Stability of Continuously Pumped Atom Lasers
Simon A. Haine, J. J. Hope, Nicholas P. Robins +1 more
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.
arXiv:cond-mat/0112372•Physical Review Letters•Apr 11, 2002•28 citations