Manufacturing process for striae-free multicomponent chalcogenide glasses via multiple fining steps
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United States of America Patent
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Nov 20, 2018
Grant Date -
Sep 8, 2016
app pub date -
Mar 3, 2016
filing date -
Mar 3, 2015
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Abstract
The present invention provides a method for synthesizing high optical quality multicomponent chalcogenide glasses without refractive index perturbations due to striae, phase separation or crystal formation using a two-zone furnace and multiple fining steps. The top and bottom zones are initially heated to the same temperature, and then a temperature gradient is created between the top zone and the bottom zone. The fining and cooling phase is divided into multiple steps with multiple temperature holds.
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