Effect of proton exchange on periodically poled ferroelectric domains in lithium tantalate

摘要

We have studied the effect of various proton exchange (PE) processes on ferroelectric domain structure in period- ically poled lithium tantalate using a selective chemical etching technique. We show that proton exchange carried out using the highly diluted melt can produce waveguides in periodically poled lithium tantalate without any erasure of domain structure.