Stability of continuously pumped atom lasers

Details Stability of continuously pumped atom lasers Stability of continuously pumped atom lasers

2001-12-20

arxiv.org/abs/cond-mat/0112372v2

Phys. Rev. Lett. 88, 170403 (2002)

Physics

Condensed Matter

4 pages

Scientific paper

10.1103/PhysRevLett.88.170403

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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