Fig. 2: Design of a 3D nanopillar used to implement metasurfaces for generating arbitrarily structured light beams. | Nature Communications

Fig. 2: Design of a 3D nanopillar used to implement metasurfaces for generating arbitrarily structured light beams.

From: Metafiber transforming arbitrarily structured light

Fig. 2

a Showcase of five representative structured light fields on the first-order HOPS, defined by different angles of θ and α. b Schematic of a 3D laser nanoprinted nanopillar waveguide in a polymer matrix (H: height, W: width, L: length, \(\gamma\): the in-plane rotation angle of the nanopillar with respect to x-axis). c Simulated 3D meta-atom library consists of the phase difference between the x- and y-linear transverse modes (left) and the propagation phase of the light polarized along the x-direction (right). d Three exemplary data planes in the meta-atom library are highlighted, with heights of H = 8, 10, 12 μm, respectively. Red and black dashed lines mark the 3D nanopillars satisfying phase differences of π /2 and π, respectively.

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