Fe-doped BaTiO3 Thin Films with Large Third-Order Nonlinear Optical Susceptibility

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2002,（8）
• 页码范围: 1122-1124
• 页数: 3页
• 分类号: O4
• 语种: 英文

摘要

Iron-doped BaTiO3 epitaxial thin films have been fabricated using the pulsed laser deposition technique. The target was an Fe/BaTiO3 two-material physical assembly. The films were grown on MgO (100) substrates at 650° C. The crystalline property of the films was studied by x-ray diffraction. The result indicated that the Fe-doped BaTiO3 films did not degrade their crystallinity at the dopant concentration of 4 mol%. The nonlinear optical properties of the films were determined using the z-scan method at the wavelength of 532 nm with a laser duration of 10ns. The real and imaginary parts of the third-order nonlinear susceptibility x(3) were determined to be 3.67 × 10-7 esu and 4.82 × 10-8 esu, respectively.