Figure 1
The distributions of a caustic vector vortex optical field at propagation distance z = 47 cm (the peak intensity position) with n = 2, m = 2 (left) and n = 2, m = 3 (right). The applied caustic phase ψ(ρ) = 0.1kρ3/2. (a) Intensity distribution in the central longitudinal cross-section with varying propagation distance. (b) The intensity distribution and transverse energy flow. Arrows represent the directions of the energy flow. (c) The orbital angular momentum flux distribution. (d) The spin angular momentum flux distribution. (e) Normalized intensity distribution, orbital angular momentum flux distribution and spin angular momentum flux distribution in the cross-section.
