Figure 2. Demonstration of wavelength-decoupled coherent pixel-based metasurfaces. (IMAGE)

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

Figure 2. Demonstration of wavelength-decoupled coherent pixel-based metasurfaces.

Caption

a. SEM images of the polychromatic full-polarization metasurface from different angles of view. The metadevice is manufactured on a 500-μm-thick double-polished silicon wafer. b. Merit function values after the evolution algorithm optimization process for the designed metadevice. The density represents the percentage of metaatoms that reach the corresponding optimization value. The maximum merit value 24 origins from the six channel polarization states and four metaatoms in one supercell. c. The designated five independent pairs of orthogonal polarization states corresponding to five wavelengths are also depicted in the Poincaré sphere. d. Focusing spots distributions on the focal plane for different polarizations at the selected five wavelengths. The insets show the corresponding polarization states.

Credit

by Jin Chen, Feilong Yu, Xingsi Liu, Yanjun Bao, Rongsheng Chen, Zengyue Zhao, Jiuxu Wan, Xiuxia Wang, Wen Liu, Yuzhi Sh, Cheng-Wei Qiu, Xiaoshuang Chen, Wei Lu, and Guanhai Li

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