Enhancement of optical nonlinearity in Ag:BaTiO3 composite films by applying an electric field during growth
JOSA B, Vol. 22, Issue 9, pp. 1949-1952 (2005)
http://dx.doi.org/10.1364/JOSAB.22.001949
Acrobat PDF (177 KB)
Abstract
We prepared the Ag:BaTiO3 composite films by pulsed-laser deposition technique. The films were grown on MgO (100) substrates under a nitrogen pressure of 10.0 Pa at 600°C, and a parallel electric field was applied on the substrate during growth. The chemical natures of Ag in the films were measured by x-ray photoelectron spectroscopy. The linear optical properties of the films were studied in the wavelength range of 330 to 700 nm. The third-order nonlinear optical susceptibilities of the films were determined by z-scan method at the wavelength of 532 nm with a laser duration of 10 ns. The figure of merit (FOM) was ∼1 order of magnitude larger than that of the films that were grown without an electric field and reached 1.62×10^−10 esu cm. Our experimental results have demonstrated that an external electrical field can induce the metal-particle orientation in order and therefore enhances the FOM of the metal-dielectric composite films.
© 2005 Optical Society of America
OCIS Codes
(160.1190) Materials : Anisotropic optical materials
(190.0190) Nonlinear optics : Nonlinear optics
(310.6860) Thin films : Thin films, optical properties
Citation
Dongyi Guan, Zhenghao Chen, Weitian Wang, Huibin Lu, Yueliang Zhou, Kui-juan Jin, and Guozhen Yang, "Enhancement of optical nonlinearity in Ag:BaTiO3 composite films by applying an electric field during growth," J. Opt. Soc. Am. B 22, 1949-1952 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-9-1949
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