Figure 5: Numerical results with linear polarized incident light for lā=ā+2, ā2, +5, ā5.
From: Generation and detection of orbital angular momentum via metasurface
The interference results at the position of zā=ā5āĪ¼m (before the focal plane), zā=ā10āĪ¼m (at the focal length plane) and zā=ā15āĪ¼m (after the focal plane), are shown in first, second, and third row, respectively.
