Patent ID: 7418835
Filing Date: 2008-09-02
Classification: C03C,G02B,Y10S

Abstract:
1. A process for making a chalcogenide glass comprising: disposing an arsenic monochalcogenide and at least one chalcogenide selected from the group consisting of sulfur, selenium, tellurium and mixtures thereof, at a hot section of an open distillation system; distilling under vacuum in the open distillation system the arsenic monochalcogenide and the at least one chalcogenide so that distilled arsenic monochalcogenide and distilled at least one chalcogenide are deposited at a cold section of the open distillation system; sealing the open distillation system; and reacting and homogenizing the distilled arsenic monochalcogenide and distilled at least one chalcogenide while a transformation from crystalline state to glassy state takes place.