Figure 1From: Coherent anti-Stokes Raman scattering enhancement of thymine adsorbed on graphene oxideSchematic band energy diagram showing transitions in different Raman processes. In CARS, the pump (green arrow) and the Stokes (red arrow) beams drive the molecular vibrations. Through further interaction with the pump (another green arrow) beam, the blue-shifted photon (blue arrow) is emitted and detected.Back to article page