Phys. Rev. Lett. 102, 124801 (2009) [4 pages]Few-Cycle Laser-Driven Electron AccelerationReceived 26 September 2008; published 26 March 2009 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.124801
DOI:
10.1103/PhysRevLett.102.124801
PACS:
41.75.Jv, 41.75.Ht
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