Resonant Plasma Wave Growth and Monoenergetic Electron Beam Production using Collinear High-Intensity Ultrashort Laser Pulses

TL;DR

This paper demonstrates a resonant scheme using two co-propagating laser pulses to generate high-amplitude plasma waves and produce monoenergetic electron beams with better control than single-pulse methods.

Contribution

It introduces a resonant interaction technique with two laser pulses that enhances plasma wave growth and electron beam quality over traditional single-pulse approaches.

Findings

Resonant interaction produces higher amplitude plasma waves.

Monoenergetic electron beams with low divergence are generated.

The scheme offers improved control and longer plasma wave growth.

Abstract

The resonant generation of relativistic plasma waves and plasma wave guiding by two co-propagating laser pulses has been studied. By proper timing between guiding and driver pulses, a resonant interaction occurs, which generates a high-amplitude plasma wave over a longer length than is possible with either of the laser pulses individually. The growth of the plasma wave is inferred by the measurement of monoenergetic electron beams with low divergence that are not measured by using either of the pulses individually. This scheme can be easily implemented, and allows more control of the interaction than is available to the single pulse scheme.