Barium strontium titanate photorefractive device and method for

Optical: systems and elements – Optical modulator – Light wave temporal modulation

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359276, 359300, 372 21, 385 5, 385122, G02B 514, G02B 523, G03H 102

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052872130

ABSTRACT:
The invention relates to a photorefractive device made of single crystal of which the chemical composition substantially is Ba.sub.1-x Sr.sub.x TiO.sub.3 (0.01<x<0.1 BST) The method for manufacturing said device comprises: growing BST single crystal by Czochralski technique; annealing said crystal in oxidizing atmosphere; machining said crystal into cuboid with polished surfaces; poling said cuboid mechanically and electrically into single-domain state. Said device may ba a piece of said single-domain crystal, or an optoelectronic assembly including at least one of said crystal as the core part. Performances of said device are similar to the one made of BaTiO.sub.3. A reflectivity as high as 52% has been reached using said device as a self-pumped phase conjugator. Compared to BaTiO.sub.3, the method for manufacturing BST crystal according to the invention has advantages such as shorter typical growth period of 3-4 days, simpler requirement for equipment and technique, higher yield, and easier to obtain crystal cuboid with larger dimensions.

REFERENCES:
patent: 4099836 (1978-07-01), Baues et al.
patent: 4677083 (1987-06-01), Uedaira et al.
patent: 4724038 (1988-02-01), Pastor et al.
patent: 4773739 (1988-09-01), Valley et al.
patent: 4853199 (1989-08-01), Inoue et al.
patent: 5038359 (1991-08-01), Pepper et al.
patent: 5084424 (1992-01-01), Abe et al.
Hribek, P; Gsk. Cas. Frz. A. (Czech.), vol. 38, #5, pp. 473-483, 1988; abst. only supplied.
Feinberg, J; Opt. Lett., vol. 7, #10, pp. 486-488, Oct. 1982; abst. only suuplied.
Gower et al; J. Opt. Soc. Am. B., Opt. Phys., vol. 5, #8, pp. 1750-1707, Aug. 1988; abst. only supplied.
Ueda, S; Matter Res. Bull., vol. 9, #4, Apr. 4, 1974, pp. 469-476; abst. only Supplied.
J. A. Basmajian & R. C. DeVries, Phase Equilibria in the system BaTiO.sub.3 -SrTiO.sub.3, Journal of the American Ceramic Society, vol. 40, No. 11, pp. 373-376.
D. Rytz et al, Growth of Ba.sub.1-x Sr.sub.x TiO.sub.3 Single Crystals, Japanese Journal of Applied Physics, vol. 24 (1985) Supplement 24-2, pp. 622-624.
S. Ueda, Crystal Growth and Dielectric Properties of Barium Strontium Titanate Ba.sub.0.97 Sr.sub.0.03 TiO.sub.3, Materials Research Bulletin, vol. 9, pp. 469-476 1974).

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