Title: Observation of Gigawatt-Class THz Pulses from a Compact Laser-Driven Particle Accelerator
Authors: Gopal, A ×
Herzer, S
Schmidt, A
Singh, P
Reinhard, A
Ziegler, W
Broemmel, D
Karmakar, A
Gibbon, Paul
Dillner, U
May, T
Meyer, H-G
Paulus, G. G #
Issue Date: 2013
Publisher: American Physical Society
Series Title: Physical Review Letters vol:111 issue:7
Article number: 074802
Abstract: We report the observation of subpicosecond terahertz (T-ray) pulses with energies 460 micro-J from a laser-driven ion accelerator, thus rendering the peak power of the source higher even than that of state-of-the-art synchrotrons. Experiments were performed with intense laser pulses (up to 5 10^19 W/cm^2) to irradiate thin metal foil targets. Ion spectra measured simultaneously showed a square law dependence of the T-ray yield on particle number. Two-dimensional particle-in-cell simulations show the presence of transient currents at the target rear surface which could be responsible for the strong T-ray emission.
ISSN: 0031-9007
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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