title: Quasi-phase-matching and dispersion characterization of harmonic generation in the perturbative regime using counterpropagating beams.
abstract: It is shown theoretically that second harmonic generation can be quasi-phase-matched by using a pump beam consisting of a forward propagating field and a counterpropagating pulse train. The counterpropagating setup can also be used for direct measurement of the coherence length of the nonlinear process which can determine the dispersion properties of the medium.
authors.affiliation: Department of Physics and JILA, University of Colorado at Boulder and NIST, Boulder, Colorado 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
mesh_terms: D000465:Algorithms; D004867:Equipment Design / Q000295:instrumentation; D008027:Light; D015233:Models, Statistical; D016011:Normal Distribution; D055095:Optics and Photonics / Q000295:instrumentation*; D017785:Photons; D012031:Refractometry / Q000295:instrumentation; D012107:Research Design; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014159:Transducers