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Article Dans Une Revue Physical Review Letters Année : 2023

Coherent subcycle optical shock from superluminal plasma wake

H. Peng
  • Fonction : Auteur
T.W. Huang
  • Fonction : Auteur
K. Jiang
  • Fonction : Auteur
R. Li
  • Fonction : Auteur
C.N. Wu
  • Fonction : Auteur
M.Y. Yu
  • Fonction : Auteur
S. Weber
  • Fonction : Auteur
C.T. Zhou
  • Fonction : Auteur
S.C. Ruan
  • Fonction : Auteur

Résumé

We propose a new mechanism for generating coherent subcycle optical pulse by directing a relativistic electron beam (REB) into a plasma with a density up-ramp. The subcycle pulse is coherently emitted by bubble-sheath electrons in REB-induced superluminal plasma wake. Using three-dimensional particle-in-cell and far-field time-domain radiation simulations as well as analytical modeling, we show that an isolated subcycle optical shock can be produced at the Cherenkov angle. This radiation has ultra-short attosecond-scale duration and high intensity and exhibits excellent directionality with ultra-low angular divergence and stable carrier envelope phase. Its central frequency can be easily tuned over a wide range, from the far-infrared to the ultra-violet, by adjusting the plasma and driver-beam density.

Dates et versions

hal-03972540 , version 1 (03-02-2023)

Identifiants

Citer

H. Peng, T.W. Huang, K. Jiang, R. Li, C.N. Wu, et al.. Coherent subcycle optical shock from superluminal plasma wake. Physical Review Letters, 2023, 131 (14), pp.145003. ⟨10.1103/PhysRevLett.131.145003⟩. ⟨hal-03972540⟩
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