Fig. 2: Metasurface applications for chromatic aberration correction.
a Broadband achromatic optical metasurface devices, enabling achromatic performance from 1200 to 1680 nm33: i. Schematic for chromatic (left) and achromatic (right) metalenses; ii. Phase profile for broadband achromatic metalens at an arbitrary wavelength. b Cascaded metasurfaces for enhanced broadband correction35: i. Artist’s view of the three-layer lens; ii. Schematic illustration of the layered structure. c Combining traditional optics with metasurfaces, featuring a full field-of-view angle surpassing 20° within the 8–12 μm wavelength range41. d Application of inverse design techniques42: i Scanning electron micrograph of inverse-designed metaoptics; ii. Zoom-in scanning electron micrograph of metaoptics; iii. Simulated imaging performance of inverse-designed metaoptics. e High-resolution achromatic metalens imaging with sequential AI models45. f Achromatic single metalens imaging via deep neural network46.
