Wideband Chaotic sub- THz Generation Based on Excitation of Rogue Waves in Gyrotron

We demonstrate a method for production of ultrawideband (UWB) terahertz radiation, based on the rogue waves generation in gyrotrons. Previously it was shown, that gyrotrons operating in the regime of developed turbulence can sporadically emit “giant” spikes, which can be interpreted as rogue waves generation. Such spikes have a short length and, correspondingly, a wide spectrum. Within the framework of the average approach and direct 3D PIC (particle-in-cell) simulations it is shown that the 260 GHz gyrotron excited by the 30kV/10A helical electron beam can produce chaotic radiation with relative spectrum width of about 10%.