Suppression of power losses during laser pulse propagation in underdense plasma slab

K. V. Lezhnin, K. Qu, N. J. Fisch

Research output: Contribution to journalArticlepeer-review

Abstract

For current state-of-the-art terawatt lasers, the primary laser scattering mechanisms in plasma include forward Raman scattering (FRS), excitation of plasma waves, and the filamentation instability. Using 2D particle-in-cell (PIC) simulations, we demonstrate that FRS dominates in the regime with medium-to-low density plasma and non-relativistic laser fields. We numerically show that FRS can be suppressed using a two-color laser with frequency detuning exceeding the plasma frequency, Δ ω > ω pe, leading to a more efficient laser energy transmission. An optimal laser pulse energy redistribution ratio is predicted analytically and verified by PIC simulations.

Original languageEnglish (US)
Article number023112
JournalPhysics of Plasmas
Volume28
Issue number2
DOIs
StatePublished - Feb 1 2021

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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