Quasi-periodic and random quasi-phase matching of high harmonic generation.
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.
Bahabad
Alon
A
Department of Physics and JILA, University of Colorado at Boulder and NIST, Boulder, CO 80309, USA. alonb@jila.colorado.edu
Cohen
Oren
O
Murnane
Margaret M
MM
Kapteyn
Henry C
HC