Figure 3
From: Orbital angular momentum transformation of optical vortex with aluminum metasurfaces
(a,b) Simulated beam intensity and phase profiles for the OAM transformation at z(n) = 12n − 7 (µm) with n = 1, 2, ∙∙∙, 8. (c) Measured beam intensity profiles and (d) interferometry patterns at 532 nm. The white dashed lines mark the dislocation cut lines of fractional-order vortices. The red circles in (b) mark the vortex structures located below or above the beam center of fractional-order vortices.
