  We consider combining of multiple laser beams into a single near
diffraction-limited beam by beam self-focusing (collapse) in a Kerr medium. The
beams with the total power above critical are combined in the near field and
then propagated in the Kerr medium. Nonlinearity results in self-focusing
event, combining multiple beams into nearly a diffraction-limited beam that
carries the critical power. Beam quality of the combined beam is analyzed as a
function of the number of combining beams and the level of random fluctuations
of the combining beams phases.
