Dynamical Changes Non-Reciprocal Bistability in a Metasurface with a Nonlinear Element on Wood’s Anomaly Resonances

Herein, we introduce a novel nonlinear metasurface architecture featuring a thin metal-dielectric grating incorporated with Kerr-type nonlinear elements. This innovative metasurface configuration is adept at generating high-Q lattice mode resonances, allowing for the exploration of distinct electromagnetic modes associated with Wood’s anomalies across varying frequency parameters. The resultant mode resonances yield enhancement local field intensities, consequently amplifying nonlinear effects significantly. Notably, the metasurface exhibits bistable characteristics, the dynamics of which can be efficiently changed through alterations in illumination conditions. Through rigorous numerical simulations, we observe a non-reciprocal phenomenon in the transmission of electromagnetic waves through the grating containing nonlinear elements, underscoring the versatility and potential applications of this novel metasurface design.