Haine, S.Hope, Joseph2015-12-132015-12-131050-2947http://hdl.handle.net/1885/76759A multimode, semiclassical model of a continuously pumped atom laser was presented. It was found that the system was unstable below a critical scattering length for a spatially independent coupling process. The study on the model also showed that the atom laser was stable to a finite number of modes and could induce single-mode operation for a spatially dependent pumping.Keywords: Diffusion; Equations of motion; Laser modes; Light scattering; Pumping (laser); Quantum optics; Thermal effects; Mode selectivity; Lasers20032015-12-11