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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 20,
  • Issue 7,
  • pp. 073601-
  • (2022)

Inverse design of 1D color splitter for high-efficiency color imaging

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Abstract

We introduce a simple one-dimensional (1D) structure in the design of 1D color splitters (1D-CSs) with RGB unit cells for color imaging and propose a single-to-double-layer design in 1D-CSs. Based on inverse design metasurfaces, we demonstrate numerically a single-layer 1D-CS with a full-color efficiency of 46.2% and a double-layer 1D-CS with a full-color efficiency of 48.2%; both of them are significantly higher than that of traditional color filters. Moreover, we demonstrate a 1D-CS that has application value by evaluating the double-layer 1D-CS’s performances in terms of incident angle sensitivity, polarization angle sensitivity, and assembly tolerance.

© 2022 Chinese Laser Press

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