Quasi-phasematching of harmonic generation via multimode beating in waveguides
arXiv:physics/0702116 · doi:10.1364/OE.15.007894
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.
6 pages including 3 figures