CRUCIBLE AND METHOD FOR MANUFACTURING FLUORIDE CRYSTAL

摘要

PROBLEM TO BE SOLVED: To provide a crucible and a method for stably manufacturing a fluoride crystal which realize manufacture of a high quality fluoride single crystal having high transmittance in the ultraviolet region or the vacuum ultraviolet region. SOLUTION: The crucible for manufacturing the fluoride crystal is used for manufacturing the crystal by melting a fluoride material and a fluorinating agent. The crucible is composed of a main part for containing the fluoride material and the fluorinating agent and a cap part for covering the main part, and the main part and the cap part can be fixed to each other. A pressure regulating mechanism for regulating the pressure in the crucible is provided in at least either one of the main part and the cap part. COPYRIGHT: (C)2005,JPO&NCIPI