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

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 self-modulational instability (SMI). Using 2D PIC simulations, we demonstrate the dominance of the FRS in the regime with medium-to-low density plasma and non-relativistic laser fields. However, the use of multi-colored lasers with frequency detuning exceeding the plasma frequency, $\Delta \omega >{\omega }_{\mathrm{pe}}$, suppresses the FRS. The laser power can then be transmitted efficiently.

7 pages, 7 figures

References in corpus (8)

• All-optical Compton gamma-ray source
• Polarized positron beams via intense two-color laser pulses
• Collimated gamma-ray beams from structured laser-irradiated targets -- how to increase the efficiency without increasing the laser intensity
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Cited by in corpus (2)

• Generating optical supercontinuum and frequency comb in tenuous plasmas
• On parallel laser beam merger in plasmas