METHOD FOR PRODUCING EXTRA-PURE CHALCOGENIDE GLASSES CONTAINING GALLIUM Russian patent published in 2022 - IPC C03C3/32 C03B3/02 C03B8/04 

FIELD: chalcogenide glass production.

SUBSTANCE: invention relates to a method for producing high-purity gallium-containing chalcogenide glasses, which are promising materials for the manufacture of massive optical elements and optical fibers for sensors, amplifiers and lasers operating in the mid-IR range. In a method for producing high-purity gallium-containing chalcogenide glasses, which includes loading the charge components into an evacuated quartz reactor, synthesizing a glass-forming melt, its homogenizing melting, quenching the glass-forming melt, and annealing the glass, gallium chalcogenide is synthesized by passing chalcogen vapor over metallic gallium. The loading of the synthesized gallium chalcogenide into the reactor is carried out by the method for chemical transport at a temperature of 600–700°C using gallium(III) iodide as a transport agent.

EFFECT: decrease in the content of impurities in chalcogenide glasses that absorb and scatter radiation in the spectral range of 2–18 μm, and, as a result, an increase in the optical transparency of glasses.

1 cl, 3 ex