Modeling and Design of Blazed Metagratings

Metagratings, which are usually composed of nano pillars, start to draw more and more attention for different applications. They are known for their high diffraction efficiency in non-paraxial cases and insensitivity to polarization. In this example, we construct a blazed metagrating using square nano pillars, following the work of P. Lalanne, et al., and demonstrate the optimization of metagratings in VirtualLab Fusion. Particularly, we evaluate the polarization-dependent efficiency in the simulation.

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