Fig. 2: Experimental setup and terahertz (THz) spectrum.
From: Antiferromagnetic magnonic charge current generation via ultrafast optical excitation
a The schematic of THz emission spectroscopy. The pump laser propagates along the z-axis and sample is set in the x-y plane and the azimuth is denoted by θ. b Temporal THz waveform of the THz emission from 15 nm Mn2Au single layer. c Fourier-transformed spectrum of b. d THz amplitude as a function of the laser fluence. The solid line is a linear regression fit to the experimental data. Both c and d spectra are normalized to peak amplitude.
