Single-crystal – oriented-crystal – and epitaxy growth processes; – Processes of growth from liquid or supercritical state – Havin growth from molten state
Patent
1991-12-12
1996-10-08
Kunemund, Robert
Single-crystal, oriented-crystal, and epitaxy growth processes;
Processes of growth from liquid or supercritical state
Havin growth from molten state
117 73, 117948, 423596, C30B 2930
Patent
active
055627684
ABSTRACT:
The invention provides a method of manufacturing stoichiometric potassium-lithium niobate crystals. Such crystals exhibit a high degree of double refraction and can suitably be used to double the frequency of a light wave with noncritical phase matching. By virtue of the temperature dependence of the nonlinear optical properties and the possibility of doubling the frequency at room temperature and at wavelengths from 800 to 850 nm the material according to the invention is very suitable for use in cooperation with semiconductor lasers.
REFERENCES:
Adachi et al. (I), "K.sub.3 Li.sub.2 Nb.sub.5 O.sub.15 Optical Waveguides Fabricated on Sapphire by RF Sputtering," Jpn. J. Appl. Phys. vol. 18 (1979), No. 8 pp. 1637-1638.
Adachi et al., (II) "Elastic and Piezoelectric Properties of Potassium Lithium Niobate Crystals", Jap. J. Appl. Phys. vol. 17 (No. 11) Nov. 1978 pp. 1969-1973.
Neurgaonkar et al. "Growth and Properties of Tungsten Bronze K.sub.3 Li.sub.2 Nb.sub.5 O.sub.15 Sangle Crystals", Mat. Res. Bull. vol. 24 pp. 1025-1030, 1989.
Kazaryan "Study of the Growth Conditions of Potassium Lithium Niobate Crystals in Ferroelectric Phase", Isv. Aked. Nouk. Arm, vol. 13(3) pp. 241-243, 1978, abs. only.
Fukuda, "Growth and Crystaliographic Characteristics of K.sub.3 L.sub.2 Nb.sub.5 O.sub.15 Single Crystals", Japan J. Appl. Phys. 8(1969) pp. 122.
Kunemund Robert
Spain Norman N.
U.S. Philips Corporation
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