Phase modulation in polarization beating quasi-phase-matching of high-order-harmonic generation

Tzvi Diskin, Ofer Kfir, Avner Fleischer, Oren Cohen

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Polarization beating quasi-phase-matching (PB QPM) in high-harmonic generation (HHG) is currently understood as a purely-intensity-modulation quasi-phase-matching (QPM) technique. In PB QPM, the driver ellipticity oscillates during propagation, modulating the HHG conversion efficiency since the single-atom HHG yield decreases rapidly with increasing ellipticity of the driving laser. We show that PB QPM is in fact based on both intensity and phase modulations. Unfortunately, in PB QPM the intensity and phase contributions oppose each other, resulting in significant reduction in the QPM efficiency.

Original languageEnglish
Article number033807
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume92
Issue number3
DOIs
StatePublished - 4 Sep 2015
Externally publishedYes

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