Figure 4: Raman spectroscopy.
From: Terahertz saturable absorbers from liquid phase exfoliation of graphite

Raman spectra acquired at 514.5 nm of (a) GW flakes (black) and a GW film deposited on SiO2/Si (red) and of (b) GEth flakes (black) and a GEth film (red). Statistics of (c) Pos(G), (d) FWHM(G), (e) Disp(G) and (f) FWHM(2D) for GEth (grey) and GW (red) films.