All-dielectric metasurfaces and truncated photonic crystals host dark surface modes that, when coupled to radiation by gratings, produce beam collimation and frequency-splitting wavefront control.
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Wavefront manipulation based of the excitation of bound states in dielectric photonic crystals and bilayer metasurfaces
All-dielectric metasurfaces and truncated photonic crystals host dark surface modes that, when coupled to radiation by gratings, produce beam collimation and frequency-splitting wavefront control.