Figure 2 | Theoretical design and experimental realization of the misaligned bilayer metagratings. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 2 | Theoretical design and experimental realization of the misaligned bilayer metagratings.

Caption

Figure 2 | Theoretical design and experimental realization of the misaligned bilayer metagratings. a. a typical Fano resonance resulting from guided-resonance modes in bilayer metagratings. b. The reflection dip and peak of Fano resonance as functions of radiation directionality of guided-resonance modes with matched in-plane momentum k// and -k//. The red dots correspond to the case of mirror symmetry and dashed lines represent the case of P symmetry. c. Scanning electron microscope images of the fabricated bilayer metagratings sample. d. Angle-resolved reflection spectrum in simulation and experiment.

Credit

Ze-Peng Zhuang, Xin Zhou et al.

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