This letter proposes an all-solid-state, ultra-low sidelobe optical phased array (OPA) by arranging the broadband metasurface units in the mid-infrared band. Simulation results demonstrate that the OPA generates a specific… Click to show full abstract
This letter proposes an all-solid-state, ultra-low sidelobe optical phased array (OPA) by arranging the broadband metasurface units in the mid-infrared band. Simulation results demonstrate that the OPA generates a specific or a continuous beam sweep between 0° and 42.22° as the 354.56° phase modulation of the designed metasurface. A key feature of our design is that the maximum sidelobe energy of the OPA is only 4% of the main lobe energy within the total deflection angle, which depends on the reflectance fluctuation range of the broadband metasurface less than 11.91% during phase control.
Journal Title: Applied Physics Express
Year Published: 2021
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