Few-cycle laser-driven electron acceleration

K. Schmid, L. Veisz, F. Tavella, S. Benavides, R. Tautz, D. Herrmann, A. Buck, B. Hidding, A. Marcinkevicius, U. Schramm, M. Geissler, J. Meyer-ter-Vehn, D. Habs, F. Krausz

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Abstract

We report on an electron accelerator based on few-cycle (8 fs full width at half maximum) laser pulses, with only 40 mJ energy per pulse, which constitutes a previously unexplored parameter range in laser-driven electron acceleration. The produced electron spectra are monoenergetic in the tens-of-MeV range and virtually free of low-energy electrons with thermal spectrum. The electron beam has a typical divergence of 5-10 mrad. The accelerator is routinely operated at 10 Hz and constitutes a promising source for several applications. Scalability of the few-cycle driver in repetition rate and energy implies that the present work also represents a step towards user friendly laser-based accelerators.

Original languageEnglish
Article number124801
Number of pages4
JournalPhysical Review Letters
Volume102
Issue number12
Early online date26 Mar 2009
DOIs
Publication statusPublished - 2009

Keywords

  • pulses
  • regime
  • wakefield acceleration
  • beams
  • few-cycle
  • laser-driven electron acceleration

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