We use the coherent density function theory to show that partially coherent beams are unstable and may collapse in inertial bulk Kerr media. The threshold power for collapse, and its dependence on the degree of coherence, is found analytically and checked-numerically. The internal dynamics of the walk-off modes is illustrated for collapsing and diffracting partially coherent beams.
Bibliographical noteCopyright (1999) by the American Physical Society.
- SATURABLE NONLINEAR MEDIA
- SPATIAL SOLITONS