Structuring of ferroelectric domains in lithium niobate crystals by UV light
by
Hendrik Steigerwald(Bonn University, Germany)
→
Europe/Stockholm
FA32
FA32
Description
Ferroelectric lithium niobate is a material widely used in photonics due to its ease of fabrication, robustness and good nonlinear-optical and electro-optic properties. For some applications in non-linear optics like second harmonic generation or optical parametric oscillation, lithium niobate crystals with tailored domain patterns on the µm-scale are desired.
In this talk I will present our work that utilizes strongly absorbed UV light to structure ferroelectric domains an all crystal faces, irrespective of the crystallographic axes. The UV light can be either utilized to directly generate ferroelectric domains by induced electrical fields or to alter the crystal structure that way that domain inversion is inhibited.
Acknowledgements
Financial support from the Deutsche Forschungsgemeinschaft and the Deutsche Telekom AG is gratefully acknowledged.
