Development of Terahertz Radiation Sources using Compact Linear Accelerator LEENA

Abstract

Tunable and high-power terahertz radiation sources using relativistic electron beams from a compact linear accelerator LEENA are under development. The synchrotron radiation and Smith-Purcell radiation in THz regime were successfully measured. The coherent radiation power from an electron bunch shorter than 1ps is estimated theoretically to be about 10⁷ larger than the incoherent one. Recent experimental results on the generation of the THz radiation and the numerical results on the high-power coherent radiation from a short electron bunch are reported.