Ata Ur Rahman Khalid, Naeem Ullah, Yu Han, Urooj Asghar, Xiaocong Yuan, Fu Feng. Single-layered non-interleaved spin-insensitive metasurfaces for wavefront engineering[J]. Chinese Optics Letters, 2023, 21(1): 010006
- Chinese Optics Letters
- Vol. 21, Issue 1, 010006 (2023)
Fig. 1. (a) Unit cell 3D schematic. The period Px = Py is set to be 400 nm. (b) Library of amplitude and phase delays (radian) obtained through the parametric scan for linearly orthogonal polarizations. (c)–(e) Numerically simulated results of phase delays and amplitude of optimized nanobricks.
Fig. 2. Schematic illustration of spin-insensitive meta-hologram. The proposed scheme reconstructs the identical image “NRC” regardless of the spin of the incident and transmitted light.
Fig. 3. (a) Target object and (b) reconstructed CGH. (c) Numerically simulated FDTD results of the proposed spin-insensitive meta-hologram. The identical image “NRC” is reconstructed on all four transmitted CP channels.
Fig. 4. (a) Schematic of spin-insensitive beam deflector. Numerically simulated results of (b) near-field and (c) far-field under RCP and LCP light.
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Table 1. Optimized Parametric Values of Basic Nanobricks
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