SINGLE CRYSTAL GROWTH METHOD, TITANIUM PHOSPHATEPOTASSIUM SINGLE CRYSTAL AND ITS LIKE COMPOUND

• Main Authors: FURUKAWA YASUNORI, SATO MASAZUMI, ITO KOHEI
• Format: Patent
• Language: English
• Published: 11.01.1994
• Edition: 5
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; CHEMISTRY; CRYSTAL GROWTH; METALLURGY; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

PURPOSE:To grow a high-quality single crystal without any defect in good yield, to make an SHG element using the single crystal as a nonlinear optical element highly efficient and to attain its operational stability. CONSTITUTION:A crystal formed on the surface of a molten material by lowering the temp. of the molten material is used as a seed crystal to grow a single crystal under the molten material. In this method, a seed crystal, a crystal worked in the facial direction almost parallel to the easy-to-grow face of the crystal so that at least a part of the forming face or cut and polished face of the seed crystal to be dipped in the molten material is made almost analogous to the grown crystal or the small piece of the grown crystal are used.