Leydig, Voit & Mayer, Ltd.
Production method of ferro-electric crystals having periodically-poled structure
An electrolyte solution is used as a liquid electrode. The liquid electrode, as one electrode, is faced with a domain to be subjected to polarization inversion on one side surface of a substrate made of a ferro-electric crystal, and an electrolyte solution, as the other liquid electrode, is faced with the other surface of the substrate to allow an electric field to act at least on the domain to be subjected to polarization inversion. A polarization inverting voltage is applied onto the substrate via the both liquid electrodes at a temperature of 45&deg; C. or above, thereby to invert the direction of polarization. By this method, a periodically-poled structure of an Mg doped LiNbO3 crystal having a high quality can be formed.
Mitsubishi Cable Industries, Ltd.
G C C
G02F C30B C30B
inventional inventional inventional
Masaru Hirokazu Hirotaka
Nakamura Taniguchi Ito