PRApplied Paper Published (9-Dec-2020)

Our paper “Dual-polarized all-metallic metagratings for perfect anomalous reflection” by PhD student Oshri Rabinovich and A. Epstein,  has been published in the Physical Review Applied. The paper utilizes an analytical formalism to control scattering from a periodic arrangements of grooves made in a metallic slab, showing (both theoretically and experimentally) that anomalous reflection can be efficiently achieved with this all-metallic structure. In addition to the simple two-channel anomalous reflection, the model is able to tackle scenarios with multiple diffraction orders by utilizing multiple (different) grooves per period. Dual-polarized operation is also feasible with this configuration, as demonstrated as well, and fundamental limitations related to manipulating transverse electric fields are revealed and discussed. The results enable harnessing the metagrating appealing semianalytical design schemes for applications where all-metallic structures are preferred, such as high-frequency systems and spaceborne apparatus.