26 May 2015 Index change of chalcogenide materials from precision glass molding processes
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With the increase in demand for infrared optics for thermal applications and the use of glass molding of chalcogenide materials to support these higher volume optical designs, an investigation of changes to the optical properties of these materials is required. Typical precision glass molding requires specific thermal conditions for proper lens molding of any type of optical glass. With these conditions a change (reduction) of optical index occurs after molding of all oxide glass types and it is presumed that a similar behavior will happen with chalcogenide based materials. We will discuss the effects of a typical molding thermal cycle for use with commercially and newly developed chalcogenide materials and show results of index variation from nominally established material data.
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J. Deegan, J. Deegan, K. Walsh, K. Walsh, G. Lindberg, G. Lindberg, R. Benson, R. Benson, D. Gibson, D. Gibson, S. Bayya, S. Bayya, J. Sanghera, J. Sanghera, E. Stover, E. Stover, } "Index change of chalcogenide materials from precision glass molding processes", Proc. SPIE 9451, Infrared Technology and Applications XLI, 94511R (26 May 2015); doi: 10.1117/12.2176608; https://doi.org/10.1117/12.2176608

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