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A sketch of the experimental set-up and of the -based gating technique is reported.
(a) The time-and-frequency resolved reflectivity variation, measured on the multi-film sample, is shown. (b) Time traces at different wavelengths are reported. The solid lines are the fit to the data, as described in the text. (c) The frequency-resolved reflectivity variation at is reported. The solid line is the reflectivity variation mimicked replacing the insulating dielectric function with the metallic one.
(a) The of the SC pulse, reconstructed through the -based technique described in the text, is reported. The solid line is the delay between the step function, mimicking the switch opening, and the probe pulse. (b) The SC spectrogram, measured through a standard XFROG technique, is shown.
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