title: Domain-shape-based modulation of Čerenkov second-harmonic generation in multidomain strontium barium niobate.
abstract: We study experimentally and numerically the second-harmonic Čerenkov emission with two different characteristic azimuthal intensity distributions in strontium barium niobate with a random structure of χ2 nonlinearity. We monitor in situ the Čerenkov emission during domain switching and show that a change of domain size and shape results in a fourfold azimuthal modulation of the Čerenkov cone.
authors.affiliation: Institute of Applied Physics and Center for Nonlinear Science (CeNoS), Westfälische Wilhelms-Universität Münster, Münster, Germany. ayoubm@uni‐muenster.de
authors.forename: Mousa
authors.initials: M
authors.lastname: Ayoub
authors.forename: Philip
authors.initials: P
authors.lastname: Roedig
authors.forename: Jörg
authors.initials: J
authors.lastname: Imbrock
authors.forename: Cornelia
authors.initials: C
authors.lastname: Denz