We calculate the critical power for collapse of linearly polarized phase vortices, and show that this expression is more accurate than previous results. Unlike the nonvortex case, deviations from radial symmetry do not increase the critical power for collapse, but rather lead to disintegration into collapsing non vortex filaments. The cases of circular, radial, and azimuthal polarizations are also considered.
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|State||Published - 11 Apr 2008|