Formations of a giant “running” pulse in the process of a quasi-regular amplification of a long wave signal by a slipping electron bunch

Abstract

It is shown that the process of a quasi-regular amplification of a long input wave pulse by a short “slipping” electron bunch can be transformed into a different short-pulse process. Namely, a short wave pulse is formed on one of the fronts of the electron bunch and amplifies as it “runs” along the bunch. The peak power of the wave pulse formed in this way can be several orders of magnitude higher than the generation power at the saturation stage of the quasi-regular amplification stage. Estimates show that based on the existing electronic technique, it is possible to implement ultra-short sub-terahertz pulse sources based on this principle with a gigawatt level of the peak power.