Schematic views of the RIS supercell and the meta-atom. (IMAGE)

SPIE--International Society for Optics and Photonics

Schematic views of the RIS supercell and the meta-atom.

Caption

Schematic views of the RIS supercell and the meta-atom. Right: Geometric phase control in each supercell is achieved by transmitting the torque from a stepping motor to the meta-atoms through a set of gears. Left: Pink and sky-blue dials schematically depict the geometric phase control resolution and variation gradients for different circular polarizations.

Credit

Xu et al., doi 10.1117/1.AP.4.1.016002.

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