Figure 1
From: Orbital angular momentum transformation of optical vortex with aluminum metasurfaces
(a) The unit cell of nanoslit antenna at the rotated angle θ. (b) Calculated electric field |E| distributions of the nanoslit in circular polarizations at 532 nm. (c) A SEM picture of homogeneous nanoslit array. (d) Simulated and measured transmission spectra under circular polarization basis.
