METHOD OF MAKING CRYSTALLINE WORKPIECES OF SOLID SOLUTIONS OF SILVER HALIDES FOR OPTICAL COMPONENTS Russian patent published in 2013 - IPC C30B11/02 C30B33/02 C30B29/12 G02B1/02 

FIELD: chemistry.

SUBSTANCE: method involves loading starting separate silver chloride and silver bromide salts into a container made of heat-resistant glass, fusing said salts to a given composition of solid solution, growing a monocrystal in a halogenating atmosphere by moving the container in a temperature gradient, cooling the grown crystal to room temperature and removing the crystal from the container; the monocrystal is then heated at a rate of 50-60°C per hour to temperature of 250-270°C, held at said temperature for 1-2 hours, cooled at a rate of 20-25°C per hour to temperature of 100-150°C and then cooled at a rate of 30-40°C per hour to room temperature.

EFFECT: reduced internal stress in the crystalline workpiece, improved optical homogeneity and reduced optical losses.

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