Abstract-Generation of subterahertz-superradiance pulses based on excitation of a surface wave by relativistic electron bunches moving in oversized corrugated waveguides

N. S. Ginzburg, A. M. Malkin, A. S. Sergeev, I. V. Zheleznov, I. V. Zotova, V. Yu. Zaslavsky, G. Sh. Boltachev, K. A. Sharypov, S. A. Shunailov, M. R. Ul’masculov, and M. I. Yalandin

https://journals.aps.org/prl/accepted/5d073Y8eG861f051b61816e2430e18bd13acaaafd

The first experiments on observation of short pulsed superradiant (SR) emission with excitation of a surface wave by a relativistic electron bunch moving in oversized corrugated waveguide were performed. Sub-terahertz SR pulses with the central frequency of 0.14 THz, ultrashort duration of 150 ps and an extremely high peak power of 50-70 MW were generated. The experiments were based on a theoretical consideration including the quasi-optical approach and direct particle-in-cell simulations.