Broadband, high numerical aperture Laplace differentiator under multiple illumination conditions. (IMAGE)
Caption
When the input light passes through the metasurface, the light field information will be directly processed at the speed of light, and the output light field is the result of the Laplace differentiation operation. As shown in the image, it demonstrates that three distinct forms of the Chinese character “Long” —under s-polarized, p-polarized, and unpolarized illumination—yield clear second-order two-dimensional edge profiles after Laplacian differentiation via cylindrical resonant metasurfaces.
Credit
Huang Lingling
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