Fig. 4: Heterogeneous THz electrodynamics in a single nano-junction.
From: Visualizing heterogeneous dipole fields by terahertz light coupling in individual nano-junctions
a Near-field spectral amplitude ∣s(ω)∣ and (b) phase arg{s(ω)} acquired by a Fourier transform of the time-domain signal as shown for example in Fig. 2d. The results are normalized by another Fourier-transformed trace taken at the silicon substrate. Spectrums are taken at positions indicated in the inset of b. Inset is identical to the THz image shown in Fig. 2g.
