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. 2013 Oct 17;4:2586. doi: 10.1038/ncomms3586

Figure 6. Verification of THz-field-induced polarization modulations in TTF-CA.

Figure 6

(a) Schematics of the THz-pump optical-probe experiments with polarization reversal of ETHz(0). The probe energy is 2.2 eV in the visible (Vis) region. (b) Time evolution of ΔR(t)/R by THz fields with ETHz(0) directed to the left and right at 78 K. (c) Schematic of THz-pump SHG-probe experiments. Energies of the incident probe light and the SH light are 1.3 eV in the near-infrared (NIR) region and 2.6 eV in the visible region, respectively. (d) Time evolution of SHG intensity ΔISHG(t)/ISHG at 65 K and the waveform of ETHz(t) (red line).