Large third-order nonlinear optical susceptiblity of Rh: BaTiO3 thin films prepared by PLD

Guang Yang; Zhenghao Chen; Huibin Lu; Weitian Wang; Lei Yan; Guozhen Yang

doi:10.1117/12.473000

24 June 2002 Large third-order nonlinear optical susceptiblity of Rh: BaTiO3 thin films prepared by PLD

Guang Yang, Zhenghao Chen, Huibin Lu, Weitian Wang, Lei Yan, Guozhen Yang

Proceedings Volume 4806, Complex Mediums III: Beyond Linear Isotropic Dielectrics; (2002) https://doi.org/10.1117/12.473000
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Highly c-axis oriented Rh-doped BaTiO₃ thin films were grown on MgO substrates by pulsed laser deposition using a single-crystal Rh:BaTiO₃ target. THE 150 nm-thick films were deposited at 800 degrees C under the oxygen pressure of 7 by 10^-2 Pa. The structural properties of the samples were characterized by x-ray diffraction and atomic force microscopy. The full width at half-maximum of the (002) Rh:BaTiO₃ rocking curve and the root-mean-square surface roughness within the 5 by 5 micrometers ² area were 0.520 degrees and 0.85 nm, respectively. The nonlinear optical properties of the films were determined by a single beam z-scan at a wavelength of 532 nm with laser duration of 10 ns. The result shows that Rh:BaTiO₃ thin films exhibit a great nonlinear optical response with the real and imaginary parts of the third-order nonlinear optical susceptibility (chi) ⁽³) being 3.59 X 10^-7 esu and 4.01 X 10^-8 esu, respectively.

Citation Download Citation

Guang Yang, Zhenghao Chen, Huibin Lu, Weitian Wang, Lei Yan, and Guozhen Yang "Large third-order nonlinear optical susceptiblity of Rh: BaTiO3 thin films prepared by PLD", Proc. SPIE 4806, Complex Mediums III: Beyond Linear Isotropic Dielectrics, (24 June 2002); https://doi.org/10.1117/12.473000

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