Fig. 4: Calculated electronic charge distribution and pump power dependent transient reflectivity spectra.
From: Strong laser polarization control of coherent phonon excitation in van der Waals material Fe3GeTe2
a Calculated electronic charge distribution between different atoms. b Pump laser power dependence of transient reflectivity spectra under 90° pump polarization. Each of these spectra is averaged over 40 times. The scale of each spectrum is adjusted to fit in one figure frame since they are measured with different sensitivity. The inset of (b) shows the extracted frequency of each spectrum.
