Details

Autor(en) / Beteiligte

• Gopal, A
• Herzer, S
• Schmidt, A
• Singh, P
• Reinhard, A
• Ziegler, W
• Brömmel, D
• Karmakar, A
• Gibbon, P
• Dillner, U
• May, T
• Meyer, H-G
• Paulus, G G

Titel

Observation of gigawatt-class THz pulses from a compact laser-driven particle accelerator

Ist Teil von

• Physical review letters, 2013-08, Vol.111 (7), p.074802-074802, Article 074802

Ort / Verlag

United States

Erscheinungsjahr

2013

Link zum Volltext

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We report the observation of subpicosecond terahertz (T-ray) pulses with energies ≥460 μJ 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.