Fig. 3: Experimental measurements for different input signals. | npj Nanophotonics

Fig. 3: Experimental measurements for different input signals.

From: Temporal signal processing with nonlocal optical metasurfaces

Fig. 3: Experimental measurements for different input signals.The alternative text for this image may have been generated using AI.

In all panels, the red-shaded areas show the CCT of the input pulses, and the blue solid lines show the CCT of the output pulses. In panels d-g the green dashed curves show the CCT calculated for the exact first-order derivatives of the input pulses (see text for details). The measured output pulse intensities have been rescaled by different factors to aid visualization (see each legend for the corresponding factor). a–c The input pulse is a rectangular pulse with duration 1 ps (a) or 2 ps (b). In (c), we intentionally displaced the phase mask in the pulse shaper to create an asymmetric pulse. d, e The input pulses are obtained by the beating of two quasi-monochromatic pulses with frequency detuning \(\varDelta\). The detunings are (d) \(\varDelta =2.65\) THz, (e) \(\varDelta =3.75\;\textrm{THz},\,\left({\mathbf{{f}}}\right)\,\varDelta =4.42\;\) THz.

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