Affiliation:
1. Huazhong University of Science and Technology
2. University of Southern California
3. Huawei Technologies Co., Ltd.
4. State Grid Jiangxi Electric Power Co. Ltd.
Abstract
Achromatic metalenses formed using previous design methods face a compromise between diameter, numerical aperture, and working wave band. To address this problem, the authors coat the refractive lens with a dispersive metasurface and numerically demonstrate a centimeter-scale hybrid metalens for the visible band of 440–700 nm. By revisiting the generalized Snell law, a universal design of a chromatic aberration correction metasurface is proposed for a plano–convex lens with arbitrary surface curvatures. A highly precise semi-vector method is also presented for large-scale metasurface simulation. Benefiting from this, the reported hybrid metalens is carefully evaluated and exhibits 81% chromatic aberration suppression, polarization insensitivity, and broadband imaging capacity.
Funder
National Natural Science Foundation of China
Department of Science and Technology, Hubei Provincial People's Government
Science and Technology Foundation of State Grid Corporation of China
Subject
Atomic and Molecular Physics, and Optics