Figure 8
Light transmission. Top row shows the phase delay induced by sectors of the SPP by imaging the intensity transmission between crossed polarizers for the different topological charges [0, 1, 2, 3, 4, 6, 8 and 12]. In this row the width of the expanded laser beam was approximately 8 mm. The middle row shows the laser beam power distribution at 400 mm after the SPP. The width of the naked laser beam (leftmost image) was approximately 1.7 mm. The bottom row shows the simulated intensity reading of the light path for the corresponding topographies.
