CORRELATION-FUNCTIONS IN THE PRESENCE OF OPTICAL VORTICES

We evaluate two-dimensional field and intensity correlation functions for the optical Ginzburg-Landau and laser equations in the presence of optical vortices, Configurations of rotating vortices, Vortices super imposed on travelling waves and defect mediated turbulence are analyse d and compared. Intensity correlations provide a qualitative indicator for the degree of disorder of spatio-temporal evolutions. For example , patterns with few rotating vortices have correlation lengths compara ble to or larger than the transverse size of the system, while few vor tices superimposed on travelling waves can generate weak turbulence.