Abstract
Gold-dispersed BaTiO3, PGO and PLT thin films, which will be used for third-order nonlinear optical devices, were prepared by sol-gel process with spin-coating using HAuCl44H4O, Ba(CH3COO)2, Ti[O(CH2)3CH3]4, Pb(CH3COO)23H2O, Ge[O-n-C4H9]4, La(CH3COO)31.5H2O as starting materials. The thin films were heat-treated in air at temperatures ranging from 400 to 800 for 1 h. The nonlinear optical property of these thin films was measured by the degenerate four-wave mixing (DFWM) method using a frequency-doubled Nd : YAG laser with 20 ps pulse duration. Third-order nonlinear susceptibility χ(3) of gold-dispersed BaTiO3, PGO and PLT thin films with 5 vol% of gold were 1.410-6 esu, 3.510-7 esu and 1.010-7 esu respectively. The large χ(3) may be ascribed to the high dielectric constant of the films.
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Tsuchiya, T., Sei, T., Watanabe, Y. et al. Preparation and Optical Properties of Gold-Dispersed BaTiO3, PGO (Pb5Ge3O11) and PLT (Pb1-1.5xLaxTiO3) Thin Films by Sol-Gel Process. Journal of Sol-Gel Science and Technology 8, 685–688 (1997). https://doi.org/10.1023/A:1018340814327
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DOI: https://doi.org/10.1023/A:1018340814327