Dense attosecond electron sheets from laser wakefields using an up-ramp density transition

F.Y. Li, Z.M. Sheng, Y. Liu, J. Meyer-ter-Vehn, W.B. Mori, W. Lu, J. Zhang

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Controlled electron injection into a laser-driven wakefield at a well defined space and time is reported based on particle-in-cell simulations. Key novel ingredients are an underdense plasma target with an up-ramp density profile followed by a plateau and a fairly large laser focus diameter that leads to an essentially one-dimensional (1D) regime of laser wakefield, which is different from the bubble (complete blowout) regime occurring for tightly focused drive beams. The up-ramp profile causes 1D wave breaking to occur sharply at the up-ramp-plateau transition. As a result, it generates an ultrathin (few nanometer, corresponding to attosecond duration), strongly overdense relativistic electron sheet that is injected and accelerated in the wakefield. A peaked electron energy spectrum and high charge (∼nC) distinguish the final sheet.
LanguageEnglish
Article number135002
Number of pages5
JournalPhysical Review Letters
Volume110
Issue number13
DOIs
Publication statusPublished - 26 Mar 2013

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ramps
plateaus
lasers
electrons
profiles
ingredients
energy spectra
bubbles
electron energy
injection
causes
cells
simulation

Keywords

  • dense attosecond electron sheets
  • laser wakefields
  • up-ramp density transition

Cite this

Li, F.Y. ; Sheng, Z.M. ; Liu, Y. ; Meyer-ter-Vehn, J. ; Mori, W.B. ; Lu, W. ; Zhang, J. / Dense attosecond electron sheets from laser wakefields using an up-ramp density transition. In: Physical Review Letters. 2013 ; Vol. 110, No. 13.
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Dense attosecond electron sheets from laser wakefields using an up-ramp density transition. / Li, F.Y.; Sheng, Z.M.; Liu, Y.; Meyer-ter-Vehn, J. ; Mori, W.B.; Lu, W.; Zhang, J.

In: Physical Review Letters, Vol. 110, No. 13, 135002, 26.03.2013.

Research output: Contribution to journalArticle

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AU - Li, F.Y.

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