Fabrication of ferroelectric domain reversals

Optical: systems and elements – Optical frequency converter

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204164, 427100, 427466, 385122, 372 22, G02F 137

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055683088

ABSTRACT:
A method for producing domain reversals at predetermined periods deep into a MgO-LN substrate or a MgO-LT substrate in a highly controllable manner without entailing the destruction of crystals of the substrate. Proton-exchanged regions are produced in a predetermined pattern on a unipolarized MgO-LN substrate, and a substrate having a doping level of MgO ranging between 3 mol. % and 9 mol. % is used as the MgO-LN substrate when these proton-exchanged regions are changed to localized domain reversals by applying an electric field to the proton-exchanged regions from a high voltage power source, e.g. via a corona wire.

REFERENCES:
patent: 5395495 (1995-03-01), Nozaki
patent: 5415734 (1995-05-01), Harada
J. A. Armstrong et al., "Interactions between Light Waves in a Nonlinear Dielectric," Physical Review, vol. 127, No. 6, Sep. 15, 1962, pp. 1918-1939.
D. H. Jundt et al., "Periodically poled LiNbO.sub.3 for high-efficiency second-harmonic generation," Appl. Phys. Lett., vol. 59 (21), Nov. 18, 1991, pp. 2657-2659.

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