Periodic poling of magnesium-oxide-doped lithium niobate

In this article, poling characteristics and periodic poling of magnesium-oxide-doped lithium niobate MgLN are described. Periodic poling was done by the electric field method, with which uniform gratings were produced. The domain wall velocity as a function of poling field was measured and used to determine conditions for self-terminating periodic poling. A computational model for the self-termination method is also discussed here. In the experiment, it was found that thermal history prior to poling has a significant influence on the poling quality.