Berlin 2018 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur
KFM 3: Crystal Structure, Defects, Real Structure and Microstructure in Materials
KFM 3.5: Vortrag
Montag, 12. März 2018, 10:50–11:10, E 124
Local properties of PPKTP waveguide structures probed by Raman spectroscopy — •Julian Brockmeier1, Michael Rüsing1, Christof Eigner1, Laura Padberg1, Peter Mackwitz1, Christine Silberhorn1,2, Gerhard Berth1,2, and Artur Zrenner1,2 — 1Department Physik, Universität Paderborn, 33098 Paderborn, Germany — 2Center for Optoelectronics and Photonics Paderborn (CeOPP), 33098 Paderborn, Germany
Periodically poled waveguides in Potassium Titanyl Phosphate (PPKTP) have promising capabilities for integrated quantum optical applications [1]. However a fundamental understanding of the underlying physics for a defined domain patterning of waveguides, especially in the submicron region, is important. In this context we report on our systematic analysis of periodically poled Rb-exchanged waveguides in KTP in the framework of various fabrication-parameters e.g. melt-composition, exchange-temperature and fabrication order performed by confocal Raman spectroscopy. The vibrational properties of the periodically poled waveguides were determined for different scattering geometries in three dimensions. We found specific phonon modes linked to the stoichiometric/crystallographic structure and to the induced stress.
[1] Marco Fiorentino et al., 'Spontaneous parametric down-conversion in periodically poled KTP waveguides and bulk crystals', OPTICS EXPRESS, 15 (12) 7479 (2007)