Figure 2

The relative strength of HG wave function at xy-plane, when the HG photon propagates along z-axis. (a–i) show the strengths for (nx, ny) = (1, 0), (2, 0), (3, 0), (1, 1), (2, 1), (3, 1), (1, 2), (2, 2), and (3, 2), respectively. Each figure shows the nodes in the strength corresponding to nx and ny.