Fig. 5.

Simulated focusing behavior of the metalens (A and D) uninfiltrated, and with E7 infiltration oriented along the (B and E) ordinary axis and (C and F) extraordinary axis, respectively. The first row (A–C) shows the PSF near the focus, while the second row (D–F) shows the theoretical focal-spot profile taken at the focal plane. LC was treated as a homogeneous layer with height h = 0.8 μm. For infiltrated E7, the maximum field intensity at the focus decreases accompanied by increases in the sidelobe intensity and a visible shift in focal point, which is indicative of aberrations in the focusing.