Stimulated Raman scattering of a laser pulse in magnetized plasma

A Gaussian laser beam propagating through a magnetized plasma pushes the plasma radially outward, creating a plasma channel. The channel guides and self focuses the laser. However, the channel is susceptible to Stimulated Raman back Scattering. In this process laser couples to a space charge mode to produce the frequency downshifted electromagnetic side band and the laser exert a ponderomotive force on the electrons, driving the space charge mode. The nonlocal effects reduce the growth rate or the Raman process.