  It is shown that induced Raman scattering of electromagnetic waves in the
strongly magnetized electron-positron plasma of pulsar magnetosphere may be
important for wave propagation and as an effective saturation mechanism for
electromagnetic instabilities. The frequencies, at which strong Raman
scattering occurs in the outer parts of magnetosphere, fall into the observed
radio band. The typical threshold intensities for the strong Raman scattering
are of the order of the observed intensities, implying that pulsar
magnetosphere may be optically thick to Raman scattering of electromagnetic
waves.
