Nonlinear optical thin film

Details Nonlinear optical thin film Nonlinear optical thin film

1994-10-31

1995-12-05

Ryan, Patrick J.

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428328, 428434, 428457, 428688, 428689, 428697, 428700, 428701, 428702, 359329, 385122, B32B 516

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054727774

ABSTRACT:
A novel structure has, on a substrate a nonlinear optical thin film having a high .chi..sup.(3) value 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 proper substrate or changing the heat treating procedure and conditions. The thin film is further improved in nonlinear optical properties, typically .chi..sup.(3) and .chi..sup.(3) /.alpha. values by using a perovskite type compound ABO.sub.3 having a specific A/B ratio as the matrix material and controlling film deposition conditions for improving the crystallinity of the matrix.

REFERENCES:
patent: 5023139 (1991-06-01), Birnboim et al.
patent: 5198269 (1993-03-01), Swartz et al.
patent: 5234758 (1993-08-01), Olsen et al.
patent: 5253103 (1993-10-01), Boyd et al.
patent: 5401569 (1995-03-01), Kineri et al.

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