| 摘要 |
PURPOSE:To obtain a thin film of a lithium niobate single crystal ensuring reduced optical transmission loss and suitable for use as a thin film optical waveguide type element. CONSTITUTION:When a thin film of a lithium niobate single crystal is formed by liq. phase epitaxial growth, a substrate of an MgO doped lithium niobate single crystal is immersed in a melt consisting of, by mol. 40-56.3% LiO2, 6.7-13% Nb2O5, 26.3-50% B2O3 and 0-20% MoO3 as starting materials and a thin film is grown on the substrate. |
