Abstract
Six nonoxide chalcogenide glasses were made and studied for optical transmission in the range 0.6–20 μm. Four of these materials, AgAsS 2, TlAsSe 2, TlAsSe 3 and Hg 3Tl 4As 8Sb 2S 20, appeared to have useful transmission within this range, but absorption bands were seen which were ascribed to oxide impurities. The other two materials, AgTlS and TlAsS 2, were opaque in the thicknesses of several millimeters used in the study.
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