The source of THz radiation based on dielectric waveguide excited by sequence of electron bunches

[摘要] We present a new method for excitation of THz Cherenkov radiation in a dielectric waveguide by relativistic electron bunches. A sequence of bunches generates monochromatic radiation. The frequency of radiation is defined by the distance between the bunches. The studies were carried by using the newly updated BBU-3000 code which permits taking into account a number of additional options: an external quadrupole focusing system, group velocity of the wakefield, and the dielectric material loss factor. In this paper, we present our algorithm for optimizing the number and sequential positions of bunches for generation of narrow band high power THz radiation.

[发布机构] St. Petersburg Electrotechnical University, St. Petersburg, 5 Prof. Popov St., St. Petersburg; 197376, Russia^1;Euclid Techlabs LLC, 400 Professional Dr., Gaithersburg; MD; 20879, United States^2

[关键词] Cherenkov radiations;Electron bunch;Focusing system;Group velocities;Material loss;Monochromatic radiation;Relativistic electron bunch;THz radiation