钛酸钡（BaTiO3）单晶钛酸钡（BaTiO3）单晶具有优异的光折变性能，具有高的自泵浦相位共轭反射率和二波混频（光放大）效率，在光信息存储方面有巨大的潜在应用前景；同时它也是重要的衬底基片材料。晶体主要参数:晶体结构四方Tetragona(4m):13°C<T<132°Ca=3.99,c=4.04,(at26°C)生长方法TSSG(TopSeededSolutionGrowth)顶部籽晶法熔点1612°C折射率515nm633nm800nmno2.49122.41602.3681ne2.42472.36302.3235透过波长范围0.43-6.30mm电光系数rT13=8&plu***n;2pm/V?rT33=105&plu***n;10pm/V?rT42=1300&plu***n;100pm/V自泵浦相位共轭反射率（0度切）50-70%forl=515nm(Ce:BaTiO3)40-60%(PureBaTiO3)forl=515nm50-80%forl=633nm(Ce:BaTiO3)40-60%forl=633nm(PureBaTiO3)二波混频耦合系数10-40cm-1吸收损失l:515nm633nm800nma:0.285cm-10.108cm-10.033cm-1光折变效应的工作波长UndopedBTO:forvisibleCe:BTO:480-780nmRh:BTO:for720-1060nm基片规格：光折变级3x3x3mm2-4facespolished&poled5x5x5mm2-6facespolished&poled0°及45°切。基片级Size:5x5x1.0mm,10x10x1.0mmorothersPolishing:1or2facespolishedPoling:Substrateswith<100>，<110>，<111>orientati***cannotbepoled；<001>orientationsubstratemustbepoled.)