EFFECT OF THE ATOMIC RATIO OF BA TO TI ON OPTICAL-PROPERTIES OF COLD-DISPERSED BATIO3 THIN-FILMS

Gold-dispersed BaTiO3 thin films were prepared by the rf magnetron spu ttering method. The atomic ratio of Ba to Ti in the films was varied a nd the effects on the linear and nonlinear optical properties were inv estigated. As the atomic ratio increased, the value of chi((3))/alpha( 532) for the gold-dispersed BaTiO3 thin films slightly increased. It w as found that the increase in the value of chi((3))/alpha(532) is due mainly to a change in the crystalline state of the BaTiO3 matrix. Howe ver, it was also found that the atomic ratio had a smaller effect on t he value of chi((3))/alpha(532) than did the refractive index of the m atrix.