Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A 60 nm bandwidth achromatic metalens. (a) Side view scanning electron microscope (SEM) image of the fabricated AML, scale bar: 200 nm. (b) Optical image of the AML. Scale bar: 25 m. (c) Measured intensity profiles of the reflected beam by the AML in the -plane at different wavelengths. (d) Simulated intensity profiles of the reflected beam by the AML in the -plane at different wavelengths. (Reproduced from [32] with permission.)
