Figure 9
Observation of dynamics of the infinite number of C-point singularity pairs of the Poincaré–Bessel beam along propagation after the beam obstruction. The star and lemon C-point singularities of the initial beam are marked by white and black dots, respectively. The newly formed star and lemon singularity pairs due to beam obstruction are identified by white and black circles. The black rectangles mark the annihilation of the old singularity with the new singularity.
