Potassium lithium tantalate niobate photorefractive crystals

Details Potassium lithium tantalate niobate photorefractive crystals Potassium lithium tantalate niobate photorefractive crystals

1993-04-21

1997-03-25

Tucker, Philip

Compositions

Light transmission modifying compositions

Inorganic crystalline solid

252582, 252585, 423 62, 423593, 423641, G02B 520, C01G 3100

Patent

active

056141297

ABSTRACT:
Photorefractive crystals having the formula K.sub.1-y Li.sub.y Ta.sub.1-x Nb.sub.x O.sub.3 wherein x is between 0 and 1 and y is between 0.0001 and 0.15. The crystals are useful as a photorefractive material for use in optical systems. The crystals may be doped with various first transition elements and lanthanides including copper, vanadium, chromium, iron, and manganese, nickel, europium and cerium.

REFERENCES:
patent: 4001076 (1977-01-01), Robinson et al.
patent: 5145713 (1992-09-01), Venkatesan et al.
patent: 5335062 (1994-08-01), Hofmeister et al.
Fukuda, Japanese Journal of Applied Physics, vol. 9, No. 6, Jun. (1970).
Agranat, A.; Hofmeister, R. and Yariv, A.: "Characterization of a new photorefractive mateiral: K.sub.1-y L.sub.y T.sub.1-x N.sub.x, " Optical Soc. of Amer. vol. 17, No. 10, May 15, 1992, pp. 713-715.
Fukuda, T.: "Structural and Dielectric Studies of Ferroelectric K.sub.3 Li.sub.2 (Ta.sub.x Nb.sub.1-x).sub.5 O.sub.15," Japanese Journal of Applied Physics, vol. 9, No. 6, Jun. 1970, pp. 599-606.
Bonner, W.A.; Grodkiewicz, W.H. and Van Uitert, L.G.: "The Growth of K.sub.0.6 Li.sub.0.4 NbO.sub.3 Crystals for Electro-Optic and Non-Linear Applications, " Journal of Crystal Growth 1 (1967), pp. 318-319.
Agranat, A.; Leyva, V.; Sayano, K.; Yariv, A.: "Photorefractive properties of KTa.sub.1-x Nb.sub.x O.sub.3 in the paraelectric phase, " Proc. of SPIE, vol. 1148 (1989), pp. 1-15.
Van Utiert, L.G.; Singh, S.; Levinstein, H.J.; Geusic, J.E.; Bonner, W.A.: "A New and Stable Nonlinear Optical Material, " Applied Physics Letters, vol. 11, No. 5, Sep. 1,1967, pp. 161-163.

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