Yadav, Anupama and Kang, Myungkoo and Goncalves, Claudia and Blanco, Cesar and Sharma, Rashi and Richardson, Kathleen
(2020)
Impact of raw material surface oxide removal on dual band infrared optical properties of As2Se3 chalcogenide glass.
Optical Materials Express, 10 (9).
pp. 2274-2288.
ISSN 2159-3930
Abstract
The manufacturing of low loss chalcogenide glasses (ChGs) for optoelectronic applications is ultimately defined by the concentration of impurities present in starting materials or imparted via processing. We describe a rapid method for purifying metallic starting materials in As2Se3 glass where oxide reduction is correlated to optical and physical properties. Specifically, As-O reduction enhances the glass' dual-band optical transparency proportional to the extent (13-fold reduction) of oxide reduction, and is accompanied by a change in density and hardness associated with changes in matrix bonding. A significant modification of the glass' index and LWIR Abbe number is reported highlighting the significant impact purification has on material dispersion control required in optical designs. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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