Fig. 3: Experimental setup, and pump-probe results of individual materials.
From: Engineering the temporal dynamics of all-optical switching with fast and slow materials
a The pump-probe spectroscopy setup in reflectance mode with a 325 nm pump and visible probe. b Transient reflectance modulation versus time for TiN on Si probed at visible wavelengths. The response along the vertical dashed line near the ENZ wavelength of 505 nanometers is plotted in c. c The modulation has a zero-to-zero response time of several nanoseconds at 505 nm. d Transient reflectance modulation versus time for 500 nm AZO on silicon probed at near-infrared wavelengths. The response along the vertical dashed line at the near ENZ wavelength of 1210 nm is plotted in e. e The modulation has a zero-to-zero response time of <10 ps at 1210 nm.
