title: Very high power THz radiation at Jefferson Lab.
abstract: We report the production of high power (20 W average, approximately 1 MW peak) broadband THz light based on coherent emission from relativistic electrons. We describe the source, presenting theoretical calculations and their experimental verification. For clarity we compare this source with that based on ultrafast laser techniques, and in fact the radiation has qualities closely analogous to those produced by such sources, namely that it is spatially coherent, and comprises short duration pulses with transform-limited spectral content. In contrast to conventional THz radiation, however, the intensity is many orders of magnitude greater due to the relativistic enhancement.
authors.affiliation: National Synchrotron Light Source, Brookhaven National Laboratory, Upton, NY 1197, USA.
authors.forename: G L
authors.initials: GL
authors.lastname: Carr
authors.forename: Michael C
authors.initials: MC
authors.lastname: Martin
authors.forename: Wayne R
authors.initials: WR
authors.lastname: McKinney
authors.forename: K
authors.initials: K
authors.lastname: Jordan
authors.forename: George R
authors.initials: GR
authors.lastname: Neil
authors.forename: G P
authors.initials: GP
authors.lastname: Williams
mesh_terms: D003198:Computer Simulation; D055590:Electromagnetic Phenomena / Q000295:instrumentation* / Q000706:statistics & numerical data*; D004583:Electrons; D006077:Government Agencies; D007753:Laboratories; D007834:Lasers; D008872:Microwaves; D008962:Models, Theoretical; D009686:Nuclear Physics; D010315:Particle Accelerators