Production of arsenic trisulfide glass

Albert Ray Hilton Sr.; James McCord; Glen Whaley

doi:10.1117/12.277058

27 June 1997 Production of arsenic trisulfide glass

Albert Ray Hilton Sr., James McCord, Glen Whaley

Proceedings Volume 3060, Window and Dome Technologies and Materials V; (1997) https://doi.org/10.1117/12.277058
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

At one time, arsenic trisulfide (As₂S₃) glass was the only IR optical material produced commercially for infrared optical systems. The glass was produced by the tons from the 50s into the 70s. However, as the emphasis shifted to the long wavelength 8 - 12 micrometer passive optical systems, the glass fell out of favor and production worldwide ceased. The production processes used were open systems which led to environmental concerns that also contributed to the decisions to cease production. In the 1990s, Amorphous Materials (AMI) became interested in the glass in part because of the reported ability of As₂S₃ glass fibers to transmit large amounts (greater than 100 watts) of laser power. A closed process which eliminated environmental concerns was developed to produce the glass. Major emphasis was in producing glass for IR fibers. Use for imaging systems was limited. Now, however, a trend has developed to produce imaging systems based on focal plane array technology which operate in the 3 - 5 micrometer wavelength region. A demand once again has been created for the glass. The method used at AMI to produce the glass is presented. Efforts to reduce absorption through purification of the elements are described. Properties of the glass are reviewed.

Citation Download Citation

Albert Ray Hilton Sr., James McCord, and Glen Whaley "Production of arsenic trisulfide glass", Proc. SPIE 3060, Window and Dome Technologies and Materials V, (27 June 1997); https://doi.org/10.1117/12.277058

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