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Domain-shape-based modulation of Čerenkov second-harmonic generation in multidomain strontium barium niobate
Mousa Ayoub1, Philip Roedig, Jörg Imbrock
1Institute of Applied Physics and Center for Nonlinear Science (CeNoS), Westfälische Wilhelms-Universität Münster, Münster, Germany. ayoubm@uni‐muenster.de
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.
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