The theory of plasma-beam superheterodyne free electron laser with H-ubitron pumping

The nonlinear quadratic theory of plasma-beam superheterodyne free electron laser with H-ubitron pumping is presented. Multi-harmonious interaction of waves is taken into consideration. Analysis of the growth increment for the signal electromagnetic wave is carried out. It is found that prospects of practical use of the considered systems for generation of especially powerful electromagnetic signals of the mm range could be rather promising.