Kerker-Type Positional Disorder Immune Metasurfaces

Abstract

Metasurfaces that can work without the rigorous periodic arrangement of meta-atoms are highly desired by practical optical micro-nano devices. In this work, we proposed two kinds of Kerker-type metasurfaces possessing positional disorder immunity. The metasurfaces are composed of two different core-shell cylinders satisfying the first and second Kerker conditions, respectively. Even with large positional disorder perturbation of the meta-atoms, the metasurfaces can still maintain the same excellent performances as periodic ones, such as the total transmission and magnetic mirror responses. This disorder immunity is due to the unidirectional forward and backward scatterings of a single core-shell cylinder leading to very weak lateral couplings between neighboring cylinders thus rarely affecting the multiple scatterings in the forward or backward direction. In contrast, the dominant response of the disordered non-Kerker-type metasurface decreases significantly. Our findings provide a new idea for designing robust metasurfaces and extend the scope of metasurface applications in sensing and communication under complex practical circumstances.

18 pages, 9 figures

References in corpus (5)

• Electromagnetic multipole theory for optical nanomaterials
• Invisible nanowires with interfering electric and toroidal dipoles
• Beam steering with dielectric metalattices
• Kerker Conditions Upon Lossless, Absorption, and Optical Gain Regimes
• Tunable bilayer dielectric metasurface via stacking magnetic mirrors