Method for generating space-time coherent vortex and space-time dislocation

The invention relates to the technical field of optics, in particular to a method for generating space-time coherent vortex and space-time dislocation, which comprises the following steps: firstly, representing a cross-spectral density function of a partially coherent pulse beam (PCPB) as incoherent superposition of a plurality of spatial frequency domain eigenfunctions; then, Fourier transform is utilized to obtain a mutual coherence function expression of the PCPB, and the expression is expressed as incoherent superposition of a plurality of space-time domain eigenfunctions; then loading the space-time vortex phase into an intrinsic function of a time-space domain to obtain an analytical expression of a mutual coherence function with the space-time vortex phase PCPB; then enabling a real part and an imaginary part of the PCPB mutual coherence function with the space-time vortex phase to be respectively equal to zero; finally, the position where the space-time coherent vortex and the space-time dislocation a