Multifocal flat lens using thin anisotropic surface in visible light spectrum
Jeong-Hyun Park, Jae-Gon Lee
Results in Physics · 2022
doi:10.1016/j.rinp.2022.105185 (opens in a new tab)
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Abstract
In this study, a novel design methodology of multifocal flat lens using a thin anisotropic surface is proposed and investigated in visible light spectrum. The unit cell of the anisotropic surface consists of two identical electric field coupled resonators (ELCRs) separated by a dielectric substrate. When the wave-front of transmitted wave through the anisotropic surface has a shape of parabola, the focusing spot can be generated at focal point. The transverse and longitudinal multi-focusing can be achieved by a separated mode and a chessboard alternating mode, respectively. The feasibility of the methodology is confirmed by both analytic and simulated results for circular polarization incidence with wavelength of 600 nm.
Abstract licence: CC BY-NC
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