title: Quasi-phasematching of harmonic generation via multimode beating in waveguides.
abstract: A new scheme for quasi-phasematching high harmonic generation (HHG) in gases is proposed. In this, the rapid variation of the axial intensity resulting from excitation of more than one mode of a waveguide is used to achieve quasi phasematching. Numerical modeling demonstrates enhancement of the harmonic signal over that achieved for a single coherence length by factors >10(4).
authors: B
authors: B
authors: Dromey
authors: M
authors: M
authors: Zepf
authors: M
authors: M
authors: Landreman
authors: S M
authors: SM
authors: Hooker