Fig. 1: The details of transversely dispersive metalens array. | Nature Communications

Fig. 1: The details of transversely dispersive metalens array.

From: Ultra-compact snapshot spectral light-field imaging

Fig. 1

a Schematic of the transversely dispersive metalens. b Phase distributions at different wavelengths and phase compensation produced by the metalens. Inset shows the required phase compensation of the metalens. c Simulated focal spot intensity profile for different wavelengths. d Scanning electron microscope (SEM) image of the fabricated metalens array. e Top view of the red region in (d) (single metalens). Zoomed-in SEM image (f) of the green region in (e). Tilted view (g) of the blue region in (e). Image of a letter “4” by the metalens with a white light illumination with a transmission window of 450nm–650 nm is shown in (h).

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