Self-resonant wakefield generation by intense laser pulse in plasmas

It is demonstrated that in an underdense plasma the process of three-dimensional evolution of the short and strong laser pulse with duration about several plasma periods leads to the compression and self-modulation of the pulse, so that during a fairly long period of time the beats of pulse amplitude generate resonantly a strong and stable plasma wakefield. The intensity of the wake-field is so high that it can provide a new promising outlook for the plasma based accelerator concept.