Fig. 5
From: Coherent anti-Stokes Raman spectroscopy of single and multi-layer graphene
FLG nonlinear optical microscopy. Nonlinear optical images of FLG measured under a nonvibrationally resonant λS at 891.5 nm and c resonant λS at 894 nm and ΔT = 1.7 ps. e CARS image of two FLG flakes, obtained by the spectral dip (see Eq. (9)). b, d, f Intensity histograms of (a, c, e). The corresponding contrast C is also reported. The black dashed lines represent the colormap boundaries of (a, c, e). g, h Intensity profiles along the scanning paths in and out of a FLG flake as highlighted in (a, c, e) by dashed and full lines, respectively
