In the presence of fluorescence which masks the Stokes Raman bands, it is possible to obtain the Raman spectrum of a molecule in the anti-Stokes region, where fluorescence is not present, although at room temperature the scattering results much weaker than that Stokes. Moreover, the comparison between the intensities of the corresponding Raman bands in the Stokes and anti-Stokes spectral regions allows obtaining information on the actual temperature of the sample under laser irradiation.

Relation between Stokes and Anti-Stokes signals provides information about population of molecular levels, wich in their own turn depends on temperature and other factors.

Regards,

Eugene.

In nanotubes, it can also provide further inflromation about Radial Breathing Modes.

"Stokes/anti-Stokes Raman spectroscopy of HiPco single -walled carbon nanotubes",

E. Gregan, S.M. Keogh, T.G. Hedderman, B. McCarthy, G. Chambers, H.J Byrne,

International Winterschool on Electronic Properties of Novel Materials, Kirchberg, Austria, March (2002).

In the presence of fluorescence which masks the Stokes Raman bands, it is possible to obtain the Raman spectrum of a molecule in the anti-Stokes region, where fluorescence is not present, although at room temperature the scattering results much weaker than that Stokes. Moreover, the comparison between the intensities of the corresponding Raman bands in the Stokes and anti-Stokes spectral regions allows obtaining information on the actual temperature of the sample under laser irradiation.

So, both, stokes/anti-stokes signals are what we see in the spectrum?

Of course, but it depends on the method of observation.