Metasurfaces have exhibited great capabilities to control electromagnetic waves,and many multifunctional metasurfaces were recently proposed.However,although angle-multiplexed meta-devices were successfully realized i...Metasurfaces have exhibited great capabilities to control electromagnetic waves,and many multifunctional metasurfaces were recently proposed.However,although angle-multiplexed meta-devices were successfully realized in reflection geometries,their transmission-mode counterparts are difficult to achieve due to the additional requirements.Here,we design and fabricate a transmissive angle-multiplexed meta-polarizer in the microwave regime based on a multilayer metasurface.Coupled-mode-theory analyses reveal that the device exhibits distinct angle-dependent transmissive responses under excitations with different polarizations,and such differences are further enhanced by multiple scatterings inside the device.Microwave experimental results are in good agreement with numerical simulations and theoretical analyses.展开更多
基金supported by the National Natural Science Foundation of China(Nos.11734007,62192771,and 91850101)National Key Research and Development Program of China(Nos.2017YFA0303504 and 2020YFA0710100)Natural Science Foundation of Shanghai(No.20JC1414601)。
文摘Metasurfaces have exhibited great capabilities to control electromagnetic waves,and many multifunctional metasurfaces were recently proposed.However,although angle-multiplexed meta-devices were successfully realized in reflection geometries,their transmission-mode counterparts are difficult to achieve due to the additional requirements.Here,we design and fabricate a transmissive angle-multiplexed meta-polarizer in the microwave regime based on a multilayer metasurface.Coupled-mode-theory analyses reveal that the device exhibits distinct angle-dependent transmissive responses under excitations with different polarizations,and such differences are further enhanced by multiple scatterings inside the device.Microwave experimental results are in good agreement with numerical simulations and theoretical analyses.