Demonstration of transmissive metagratings achieving four orders of magnitude footprint reduction in Fourier optics applications, highlighting their potential.
The 4f system is a standard building block for various Fourier optics applications. Here, we demonstrate the potential of transmissive angular-selective metagratings to replace this system, achieving a footprint reduction by four orders of magnitude.
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Abouelatta et al. (2025) studied this question.
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