Figure 2.

Numerical demonstration of the focusing of CP light using the ESM and the HSM. (a) Schematics of the designed ESM and (b, c) simulated electric field intensities at the xz plane (x∈[−10,10] μm, y=0 μm, z∈[−20,20] μm) for (b) LCP and (c) RCP incident light. (d–f) The same as a–c, but for the HSM. The CP light is incident from the left side and is scattered to the right side of the metalens. The distance between the two focal points (F₁ and F₂) is 10 μm, and the focal length of the metalens is f=10 μm. The metalens is located at the plane z=0 μm.