Acceleration of relativistic beams using laser-generated terahertz pulses

Academic Article


  • Particle accelerators driven by laser-generated terahertz (THz) pulses promise unprecedented control over the energy–time phase space of particle bunches compared with conventional radiofrequency technology. Here we demonstrate acceleration of a relativistic electron beam in a THz-driven linear accelerator. Narrowband THz pulses were tuned to the phase-velocity-matched operating frequency of a rectangular dielectric-lined waveguide for extended collinear interaction with 35 MeV, 60 pC electron bunches, imparting multicycle energy modulation to chirped (6 ps) bunches and injection phase-dependent energy gain (up to 10 keV) to subcycle (2 ps) bunches. These proof-of-principle results establish a route to whole-bunch linear acceleration of subpicosecond particle beams, directly applicable to scaled-up and multistaged concepts capable of preserving beam quality, thus marking a key milestone for future THz-driven acceleration of relativistic beams.
  • Authors

    Published In

  • Nature Photonics  Journal
  • Digital Object Identifier (doi)

    Author List

  • Hibberd MT; Healy AL; Lake DS; Georgiadis V; Smith EJH; Finlay OJ; Pacey TH; Jones JK; Saveliev Y; Walsh DA
  • Start Page

  • 755
  • End Page

  • 759
  • Volume

  • 14
  • Issue

  • 12