Abstract
We report a liquid phase epitaxial dipping process for the growth of thin films of ferroelectric LiNbO 3 on isostructural LiTaO 3 substrates. These single crystalline films ranging from 1 to 10 μm in thickness form excellent low loss optical waveguides and have a desired sharp step change of index of refraction with the LiTaO 3 substrate. We discuss the phase stability diagrams for the flux systems used in the dipping process along with the growth parameters which affect the film quality.
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