Question about stimulated Raman emission

[ure227922]

TL;DR Summary

How is that Stimulated Raman emission relies on damping of the phonon field that is much greater than for that of the optical Stokes field?

I have read a paper states that "Stimulated Raman emission relies on damping of the phonon field that is much greater than for that of the optical Stokes field". But I cannot understand this, since all the materials I read do not state this. Can anyone explain it intuitively?

 

[malawi_glenn]

I have read a paper

which paper?

 

[ure227922]

which paper?

https://doi.org/10.1038/nphys1367