As. Sakharov et Vi. Kirsanov, GENERATION OF HARMONICS AND RAMAN SIDESCATTERING OF RELATIVISTICALLY STRONG RADIATION IN PLASMA, Plasma physics reports, 21(7), 1995, pp. 596-604
The theory of simulated Raman side and backward scattering of relativi
stically strong, circularly polarized radiation is developed for an un
derdense plasma. It is shown that, in addition to scattering at the ne
ar-carrier frequency, efficient side scattering at the odd and even hi
gh-frequency harmonics is possible.