title: Phase control of double-pass cascaded SHG/DFG wavelength conversion in Ti:PPLN channel waveguides.
abstract: The efficiency of wavelength conversion by cascaded second harmonic generation / difference frequency generation (cSHG/DFG) in Ti:PPLN waveguides can be considerably improved by using a double-pass configuration. However, due to the wavelength dependent phase change by the dielectric folding mirror phase compensation is required to maintain an optimum power transfer. We experimentally investigated three different approaches and improved the wavelength conversion efficiency up to 9 dB in comparison with the single-pass configuration.
authors.affiliation: Angewandte Physik, Universität Paderborn, Warburger Strasse 100, Paderborn, Germany. rahman.nouroozi@uni-paderborn.de
authors.forename: Rahman
authors.initials: R
authors.lastname: Nouroozi
authors.forename: Hubertus
authors.initials: H
authors.lastname: Suche
authors.forename: Ansgar
authors.initials: A
authors.lastname: Hellwig
authors.forename: Raimund
authors.initials: R
authors.lastname: Ricken
authors.forename: Viktor
authors.initials: V
authors.lastname: Quiring
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Sohler
mesh_terms: D004867:Equipment Design; D008027:Light; D008962:Models, Theoretical; D009556:Niobium; D017711:Nonlinear Dynamics; D055095:Optics and Photonics / Q000295:instrumentation* / Q000379:methods*; D010087:Oxides
chemical_list: D010087:Oxides; D009556:Niobium; C091692:lithium niobate