EFFECTS OF NONLINEAR COUPLING OF EXTREMEL Y SHORT PULSES WITH A DIELECTRIC PARAMAGNET

The theoretical study is given of the propagation processes and parame tric effects during the coupling of extremely short magnetic pulses (v ideopulses) with a dielectric spin 1/2 paramagnet in external magnetic field H-0. Unlike optical videopulses, it is shown that stationary ci rcular-polarized pulses can be formed in an inverse paramagnet at H-0, < H-0 , H-0* being determined by the medium parameters. If H-0 > H-0 , the amplification or the transverse pulse component with producing the longitudinal component in the saturation reg me is predicted. A po ssibility for continuous parametric enhancement of the signal frequenc y is shown.