Design of 2D Non-Paraxial Beam-Splitting Metagrating
Abstract
Metagratings are shown to have advantages when comparing with traditional gratings, especially in non-paraxial cases. In this example, we design a two-dimensional (2D) metagrating that splits the input into 3x3 beams. The metagrating is constructed with circular nano pillars, and in VirtualLab Fusion, we use FMM/RCWA to evaluate the diffraction efficiency of the metagrating. And, we show how to use the parametric optimization tool to improve the uniformity of the diffraction efficiencies.
VirtualLab Fusion Configuration
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VirtualLab Fusion
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Grating Package
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Use Case
Rigorous Analysis of Nanopillar Metasurface Building Block
With the rigorous Fourier modal method (FMM), we analyze the effects, especially the phase modulation, of nanopillar structures with varying diameters - the building blocks of metalenses.
Use Case
Modeling and Design of Blazed Metagratings
We design and construct a blazed metagrating in VirtualLab Fusion using square nano pillars, analyze its polarization-dependent diffraction efficiency, and further optimize it.