Wide-Angle Invisible Dielectric Metasurface Driven by Transverse Kerker Scattering
arXiv:2101.05182 · doi:10.1103/PhysRevB.103.195419
Abstract
Interference is the cornerstone of Huygens source design for reshaping and controlling scattering patterns. The conventional underpinning principle, such as for the Kerker effect, is the interference of electric and magnetic dipole and quadrupole modes. Here a route to realize transverse Kerker scattering through employing only the interference between the electric dipole and magnetic quadrupole is demonstrated. The proposed approach is numerically validated in an ultra-thin Silicon square nanoplate metasurface, and is further verified by multipole decomposition. The metasurface is shown to be invisible fornear-infrared wavelengths and with an enhanced electric field in the region of the nanoparticle. Additionally, we develop further the proposed approach with practical implementation for invisibility applications by exploring the effects of the aspect ratio of the square plate nanoresonator, the inter-particle separation, and the presence of a substrate. Further it is demonstrated that invisibility can be observed at oblique incidence up to 60° for a transverse magnetic plane wave. The results are relevant for Huygens metasurface design for perfect reflectors, invisibility and devices for harmonic generation manipulation.
arXiv comment11 pages, 6 figures
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