Optical Properties of Ca0.25Ba0.75Nb2O6 Thin Films Prepared by Spinning Coating

• 来源期刊: 材料科学技术学报：英文版
• 学科: 物理学
• 关键词: 薄膜制备 光学性质 涂层制备 纺纱 分光光度计 光有源器件 石英衬底 棱镜耦合
• 年，卷（期）: 2011,（9）
• 页码范围: 821-825
• 页数: 5页
• 分类号: O484.1|O484.41
• 语种: 英文

摘要

Ca0.25Ba0.75Nb2O6 （CBN25） thin film was prepared on quartz substrate by spinning coating and the optical properties were investigated by a Hitachi U-3410 spectrophotometer and a Metricon 2010 prism coupler. The optical band gap, thickness and refractive index at 632.8 nm of the CBN25 thin film were determined to be 3.65 eV, 529 nm and 2.2258, respectively. The dispersion of the refractive index fitted to Sellmeier relation well and optical waves could be guided into the thin film, which implied that CBN25 thin films were promising for integrated optics and optically active devices.