Striae-Free Chalcogenide Glasses

摘要

A method to synthesize striae-free chalcogenide glass using melt processing. A striae-free chalcogenide glass with uniform refractive index.

主权项

1. A method to synthesize striae-free chalcogenide glass using melt processing, comprising the steps of:
melting chalcogenide glass inside a sealed silica ampoule; providing a 2-zone furnace comprising an upper zone and a lower zone wherein the upper zone is at a higher temperature than the lower zone; mixing by rocking the sealed silica ampoule inside the 2-zone furnace; placing the sealed silica ampoule in a vertical position; forming a boule as the upper zone is at a higher temperature than the lower zone; positioning the boule such that the chalcogenide glass is within the lower zone; and cooling slowly and quenching the temperature and thereby forming the striae-free chalcogenide glass.