Optical Waveguide and Nonlinear Properties of Bi3NdTi3O12 Thin Films

Neodymium-substituted bismuth titanate （Bi3NdTi3O12, BNT） thin films were prepared on quartz substrates by a metal-organic solution deposition process. The crystalline structure was evaluated by X-ray diffraction. Waveguide property was investigated by using prism coupling technique and optical tran...

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Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2010-10, Vol.25 (5), p.743-746
Main Authors: Wang, Yuehua, Zhao, Na, Zhang, Min, Zhao, Xinyin
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Materials Science
Thin films
X射线衍射
光学测量
光学透过率
光波导
棱镜耦合技术
非线性折射率
非线性特征
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Summary:Neodymium-substituted bismuth titanate （Bi3NdTi3O12, BNT） thin films were prepared on quartz substrates by a metal-organic solution deposition process. The crystalline structure was evaluated by X-ray diffraction. Waveguide property was investigated by using prism coupling technique and optical transmittance measurement. The optical nonlinearities of the film were measured by the top-hat Z-scan techniques and a large positive nonlinear refractive index, nonlinear refractive coefficient and two-photon absorption coefficient were determined to be 3.84×10^7 esu, 0.7523 cm^2/GW and 4.81×10^4 cm/GW, respectively. These results reveal that the BNT film may be a kind of new multifunctional materials.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-010-0084-1