title: Quasi-periodic and random quasi-phase matching of high harmonic generation.
abstract: Quasi-phase matching schemes employing quasi-periodic or random spatial modulations, previously applied to perturbative nonlinear optics, are demonstrated theoretically for the extreme nonlinear optical process of high harmonic generation. We show that quasi-periodic quasi-phase matching of high harmonic generation can be used for simultaneous enhancement of arbitrarily chosen spectral regions. We also demonstrate enhancement of a single extremely wide bandwidth using random quasi-phase matching.
authors.affiliation: Department of Physics and JILA, University of Colorado at Boulder and NIST, Boulder, CO 80309, USA. alonb@jila.colorado.edu
authors.forename: Alon
authors.initials: A
authors.lastname: Bahabad
authors.forename: Oren
authors.initials: O
authors.lastname: Cohen
authors.forename: Margaret M
authors.initials: MM
authors.lastname: Murnane
authors.forename: Henry C
authors.initials: HC
authors.lastname: Kapteyn