Fig. 3 (a) Energy diagram for stimulated Raman scattering (SRS) and coherent anti-Stokes
Raman scattering (CARS). (b) Scheme for the input and output spectra of SRS. SRS leads to an
intensity gain in the Stokes beam (SRG) and to a scattering Raman loss (SRL) in the pump beam.
Also shown (not to scale) is the CARS signal generated at the anti-Stokes frequency
AS .(c, d)
Diagrams depicting the SRS spectroscopy: in panel c are shown the Raman pump line ( green line )
and the probe continuum without ( cyan line ) and with the peaks due to stimulated Raman