Raman shifted second harmonic backscattering of lasers in a magnetized plasma

Raman shifted backward second harmonic generation, shifted by upper hybrid frequency, is seen as a strong signature of the existence of a transverse static magnetic field in the laser produced plasmas. An o-mode laser exerts a second harmonic longitudinal ponderomotive force on electrons, imparting them an oscillating velocity that acts as a driver to excite a space charge upper hybrid mode and a Raman shifted second harmonic backward electromagnetic wave.