Modulation-slippage trade-off in resonant four-wave upconversion

A. Griffith, K. Qu, N. J. Fisch

Research output: Contribution to journalArticlepeer-review

Abstract

Following up on a proposal to use four-wave mixing in an underdense plasma at mildly relativistic laser intensities to produce vastly more energetic X-ray pulses [Malkin and Fisch, Phys. Rev. E 101, 023211 (2020)], we perform the first numerical simulations in one dimension to illustrate amplification of a short high frequency seed through four-wave mixing. We illustrate how parasitic processes including phase modulation and spatial pulse slippage limit the amplification efficiency. Although the regimes studied were not where the optimal efficiencies were expected, these regimes do expose the basic physical processes at play, while still yielding not insignificant spectral power upshift.

Original languageEnglish (US)
Article number052112
JournalPhysics of Plasmas
Volume28
Issue number5
DOIs
StatePublished - May 1 2021

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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