Fig. 3: Ultrafast measurement matrix with two types of active hybrid metasurfaces under external perturbation. | Nature Communications

Fig. 3: Ultrafast measurement matrix with two types of active hybrid metasurfaces under external perturbation.

From: All-optical hybrid metasurfaces for ultrafast computational spectrometer and single-pixel imaging

Fig. 3: Ultrafast measurement matrix with two types of active hybrid metasurfaces under external perturbation.

a, e Measured relaxation dynamics of active hybrid metasurfaces at a pump fluence of 0.52 mJ/cm2 with microscopic images of the fabricated hybrid metasurface samples. b, f Simulated and c, g experimental dynamic spectral evolution of the two types of hybrid metasurfaces. d, h Auto-correlation function in terms of frequency.

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