Unified microscopic-macroscopic formulation of high-order difference-frequency mixing in plasmas

Oren Cohen*, Tenio Popmintchev, David M. Gaudiosi, Margaret M. Murnane, Henry C. Kapteyn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We investigate high-order difference-frequency mixing in plasmas, taking into account the microscopic rescattering physics and propagation effects for the first time. We show that phase matching can occur over a broad frequency range, up to very high photon energies, and that it is confined to specific temporal and spatial windows. This gated phase matching mechanism is driven by the continuous phase slip between two driving fields and can be employed for manipulating the temporal, spatial, and spectral properties of high harmonic emission.

Original languageEnglish
Article number043903
JournalPhysical Review Letters
Volume98
Issue number4
DOIs
StatePublished - 2007
Externally publishedYes

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