Inverse design of multiwavelength multifocal metalens based on the tandem neural networks

Open Access

Fig. 1

Schematic diagram of the multiwavelength multifocal metalens and the unit cell. (a)–(c) Schematic diagram of LCP, RCP and LP light incidence at two wavelengths. λ₁ =532 nm, λ₂ =632 nm. (d), (e) Side view and top view of the unit cell.

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