Nonlinear optical thin film
AssigneeTDK Corporation
InventorsTohru Kineri, Masami Mori
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Abstract
A novel nonlinear optical thin film having a high .chi..sup.(3) value is provided wherein metal fine particles are uniformly dispersed in a ferroelectric or highly dielectric matrix and heat treated whereby the metal fine particles and matrix are improved in crystallinity. The excitation wavelength can be substantially changed by a choice of the heat treating conditions. The crystallinity of the metal fine particles and matrix and .chi..sup.(3) value are improved by selecting a substrate used or changing the heat treating procedure and heat treating conditions. By forming a portion having a lower content of metal fine particles in a surface portion on an upper and/or lower side of the matrix, the excitation wavelength can be substantially changed and precisely adjusted.
Claims27
A composite structure comprising a nonlinear optical film on a substrate, said film containing 1 to 80% by volume of metal particles having a mean particle size of 1 to 100 nm in a ferroelectric or highly dielectric matrix, said matrix having a dielectric constant of at least about 10 at room temperature.
Dependencies are inferred from the claim text.