Shock-front injector for high-quality laser-plasma acceleration

A. Buck, J. Wenz, J. Xu, K. Khrennikov, K. Schmid, M. Heigoldt, J. M. Mikhailova, M. Geissler, B. Shen, F. Krausz, S. Karsch, L. Veisz

Research output: Contribution to journalArticlepeer-review

224 Scopus citations


We report the generation of stable and tunable electron bunches with very low absolute energy spread (ΔE≈5 MeV) accelerated in laser wakefields via injection and trapping at a sharp downward density jump produced by a shock front in a supersonic gas flow. The peak of the highly stable and reproducible electron energy spectrum was tuned over more than 1 order of magnitude, containing a charge of 1-100 pC and a charge per energy interval of more than 10 pC/MeV. Laser-plasma electron acceleration with Ti:sapphire lasers using this novel injection mechanism provides high-quality electron bunches tailored for applications.

Original languageEnglish (US)
Article number185006
JournalPhysical review letters
Issue number18
StatePublished - May 2 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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