Reflective nonresonant amplification of powerful terahertz wave pulses by relativistic electron bunches

Abstract

We describe the concept of an amplifier based on a principally nonlinear effect of reflection of an electron bunch from a short powerful wave pulse. This is an effective mechanism of energy extraction by the wave from particles which does not require providing of any type of the electron–wave resonance and ensures amplification of wave pulses with relatively high peak powers.