LASER FLUORIDE CERAMICS AND ITS PRODUCTION PROCESS Russian patent published in 2008 - IPC H01S3/16 

FIELD: production of optical laser materials used as optical medium for transmitting, generating, and converting photon radiation at optical-signal different frequency and power.

SUBSTANCE: source mixture of metal fluorides has base in the form of one or more fluorides out of group of alkali-earth metals and alloy additive; the latter and base are capable of producing homogenous solid solution of fluorite structure at molar proportion of 50-90/50-1; source mixture has components with fluorine-ion excess introduced therein. Proposed laser fluoride ceramic production process includes hot pressing of source mixture of crushed fluoride fractures of alkali-earth and rare-earth metals using active fluorinating agent. Fluorinating agents are obtained by their gaseous liberation during decomposition of source components under pre-evacuation and heating conditions. Source mixture used for the purpose incorporates mentioned composition. Hot pressing is conducted at temperature of minimum 900 °C. Additional fluorination of charge is conducted by means of gaseous CF₄ supplied from outside.

EFFECT: ability of producing highly transparent laser material suited to transfer, generate, and convert photon radiation at different frequencies and power of optical signals, including those unattainable for monocrystals.

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