Figure 1
From: High-performance gallium nitride dielectric metalenses for imaging in the visible

Design and simulation of metalenses. (A–C) Schematics of the metalenses building blocks designed at wavelengths of (A) 405, (B) 532, and (C) 633 nm. (D–F) Numerical intensity profiles of the metalenses designed at wavelengths of (D) 405, (E) 532, and (F) 633 nm. (G–I) Phase profiles for the metalenses designed at wavelengths of (G) 405, (H) 532, and (I) 633 nm.