Stuttgart 2012 – wissenschaftliches Programm
Q 58.9: Vortrag
Freitag, 16. März 2012, 12:45–13:00, V38.01
Poling properties of Ti-diffusion-doped LiNbO3 — •Christof Eigner, Raimund Ricken, Viktor Quiring, Hubertus Suche, and Christine Silberhorn — Integrated Quantum Optics, Applied Physics, University of Paderborn, 33098 Paderborn, Germany
Guided wave nonlinear optical frequency conversion, which utilizes domain gratings for quasi-phase matching, promises high efficiencies if low loss waveguides and homogeneous domain gratings can be fabricated. Ti-indiffused channels in congruent LiNbO3 (CLN) are promising waveguides as they provide very low loss and guiding in both, TE- and TM-polarization. However, periodic domain inversion by field assisted poling differs significantly from the poling properties of undoped virgin LiNbO3. Especially, poling of homogenous short period domain structures, e.g. for the interconversion between short (UV) and long (telecom) wavelengths, is challenging. In this work, the influence of the Ti-doping on the coercive field strength is investigated and a set-up for pulsed field-assisted poling has been tested. Significant increase of the coercive field strength of the Ti-doped compared to the undoped CLN has been observed.