Lithium niobate as well as lithium tantalite are well established materials in optical application and radio-frequency filtering. Lithium niobate tantalate (LNT) mixed crystals are a promising material for a wide range of applications in optoelectronics due to their outstanding nonlinear optical properties. In our latest study, we focused on the targeted modification of the domain structure in LNT. Using a second-harmonic microscope, we were able to identify four different cases that provide information about the formation and behaviour of the domains. These findings enable us to precisely control the phase matching in nonlinear optical processes and thus significantly improve the performance of LNT-based components. This project was realized within the DFG research group FOR5044(www.for5044.de) as a cooperation between the group of Prof. Dr. Christine Silberhorn (University of Paderborn) and the group of Prof. Dr. Lukas M. Eng (Technical University of Dresden).
https://doi.org/10.1063/5.0210972
Revolutionary advances in nonlinear optics: LNT mixed crystals in focus
