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Nonlinear optical properties of Bi1.95La1.05TiNbO9 ferroelectric film grown on fused quartz substrates by PLD

Published online by Cambridge University Press:  19 April 2011

Zhuoyu Huo ,
Junhe Han  and
Yuzong Gu
Zhuoyu Huo
Affiliation:
Institute of Micro-system Physics, Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics & Electronics, Henan University, Kaifeng 475004, People’s Republic of China
Junhe Han
Affiliation:
Institute of Micro-system Physics, Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics & Electronics, Henan University, Kaifeng 475004, People’s Republic of China
Yuzong Gu*
Affiliation:
Institute of Micro-system Physics, Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics & Electronics, Henan University, Kaifeng 475004, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: guyuzong@yahoo.com.cn
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Abstract

Bi1.95La1.05TiNbO9 (BLTN-1.05) thin films were prepared on fused quartz substrates by pulsed laser deposition. The x-ray diffraction (XRD) analysis and atomic force microscope (AFM) surface morphology measurements were performed on the samples. The XRD pattern demonstrated that the films are single-phase perovskite structured and well crystallized. The AFM analysis indicated that the films have less rough surface. The fundamental optical constants were obtained through optical transmittance measurements. The nonlinear optical properties of BLTN thin films were measured by a single beam Z-scan technique under 1064 nm excitation. The real and imaginary parts of the third-order nonlinear optical susceptibility χ(3) of the film were measured to be 9.56 × 10−9 and −3.67 × 10−9 esu, respectively. The Z-scan results show that BLTN thin films have potential applications in nonlinear optics.

Keywords

Optical propertiesFerroelectricFilm
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 9 , 14 May 2011 , pp. 1159 - 1163
Copyright
Copyright © Materials Research Society 2011

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