Figure 2
From: Spatially and spectrally engineered spin-orbit interaction for achromatic virtual shaping
Simulation of the achromatic half-wave plate.
(a), Schematic of the unit cells used in simulations. The inclination angle between u- and x-axis is ζ. (b), Calculated reflectances for cross-polarization and co-polarization for different orientation angles under circular polarized illumination. (c), Schematic of the transmission line model for achromatic polarization conversion. (d), Theoretically calculated reflectance for ζ = 15°. The effective circuit parameters for the two metasurfaces are Cu1 = 3 × 10−19 F, Cv1 = 5 × 10−19 F, Lu2 = 1 × 10−15 H, Cu2 = 1 × 10−17 F, Lv2 = 3.8 × 10−13 H, Cv2 = 1 × 10−17 F.
