Figure 3.

The intensity distributions of a caustic vector vortex optical field after passing or not passing through analyzers at propagation distance z = 47 cm with (a) n = 2 and m = 2 or (b) n = 2 and m = 3. The applied caustic phase ψ(ρ) = 0.1kρ^3/2. In (a) and (b), the upper rows contain theoretical results, and lower rows contain CCD camera images. The corresponding analyzers for the measurements of different polarization components in Fig. 3(a), (b) from columns 1 to 5 are: x-direction linear polarizer; y-direction linear polarizer; left-hand circular polarizer; right-hand circular polarizer; and no polarizer.