2 November 1993 Characterization of inhomogeneous films formed by co-evaporation of ZnSe and MgF2
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Abstract
Optical and physical properties of MgF2, ZnSe, and composite ZnSe-MgF2 films deposited by co-evaporation of ZnSe and MgF2 on glass substrates at elevated temperatures are studied. MgF2 films deposited on glass substrates at temperature of 200 degree(s)C were found durable, resistant to wet environment, high in film packing density, and having a very reproducible refractive index of 1.38 to 0.75 micrometers . ZnSe films formed under same substrate conditions were also found dense and reproducible. The refractive indices of these films were determined to be 2.50 +/- 0.01 at 0.75 micrometers . The adhesion of the films to the substrate declined drastically in hot and wet environment. Composite films deposited on glass substrate at 200 degree(s)C by co-evaporation of ZnSe and MgF2 with selected individual evaporation rates were observed to be uniform, durable, and enhanced in protection against hazardous environments.
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Fang Chung Ho, Fang Chung Ho, Chii Hua Lee, Chii Hua Lee, Rung-Ywan Tsai, Rung-Ywan Tsai, } "Characterization of inhomogeneous films formed by co-evaporation of ZnSe and MgF2", Proc. SPIE 2046, Inhomogeneous and Quasi-Inhomogeneous Optical Coatings, (2 November 1993); doi: 10.1117/12.163549; https://doi.org/10.1117/12.163549
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