Propagation of mutual coherence functions of partially coherent Gaussian Schell-model beams in a medium with third-order nonlinearities is considered. It is shown that incoherence suppresses self-focusing. The spatial coherence of the axial part of the beam improves in the self-focusing regime, whereas the transverse correlation length of the beam decreases in the same region. At high powers, waveguide formation is also studied in media with saturating nonlinearity.
© 1997 Optical Society of America
V. P. Nayyar, "Propagation of partially coherent Gaussian Schell-model sources in nonlinear media," J. Opt. Soc. Am. B 14, 2248-2253 (1997)