Fig. 3: Metasurface spectrometer with 12 focal points under monochromatic wavelengths. | Light: Science & Applications

Fig. 3: Metasurface spectrometer with 12 focal points under monochromatic wavelengths.

From: Compact multi-foci metalens spectrometer

Fig. 3

The metasurface can accurately converge the light beam with different wavelengths to the desired positions on the multi-foci ring. Simulation (top) and experimental results (bottom) at the wavelengths of 500 nm (left), 580 nm (middle), and 660 nm (right)

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