Regensburg 2016 – scientific programme

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DF: Fachverband Dielektrische Festkörper

DF 11: Poster

DF 11.8: Poster

Wednesday, March 9, 2016, 18:00–20:00, Poster E

Electrical characterization of domain reversal in thin film lithium niobate — •Kanivar Türk, Michael Rüsing, Peter Mackwitz, Gerhard Berth, and Artur Zrenner — Department Physik, Universität Paderborn, Warburger Straße 100, 33098 Paderborn, Germany

Lithium niobate is one of the foremost studied materials for applications in integrated, nonlinear optics, such as sum and difference frequency generation or parametric down conversion. The efficiency of these processes can be greatly enhanced by fabricating periodically poled domain structures. Recently, lithium niobate thin films (tf-LN) on insulator have gained great interest, e.g. due to the possibility for strong confinements of optical modes. So far, a lot of devices have been demonstrated in this material system, such as photonic wires, waveguides or ring resonators [1].

Within this work the domain reversal characteristics of tf-LN will be examined. Therefore, in this study a temperature dependent electrical characterization is realized to study the electrical response of domain reversal in tf-LN. The results are compared with previous work on bulk crystal lithium niobate, where it has been found that heat or UV does influence the coercive field and poling characteristics [2].

[1] G. Poberaj, et. al., Laser Photonics Rev. 6, (2012) 488

[2] H. Steigerwald et. al., Appl. Phys. B 101, (2010) 535