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    Refractive Index of Strontium Fluoride

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    The refractive index, relative to air, of fusion-cast strontium fluoride was determined from 0.2138µm to 11.475µm by means of the minimum-deviation method. Measurements were made on a precision spectrometer at a controlled room temperature near 20 °C. The experimental data were fitted to a Sellmeier-type dispersion equation which permits refractive index interpolation within several parts in 10-5. The index of SrF2 is compared graphically with that of BaF2 and CaF2.


    Alkaline earth fluorides, refractive index, strontium fluoride

    Author Information:

    Dodge, MJ
    Ceramics, Glass, and Solid State Science Division National Bureau of Standards, Washington, D. C.

    Committee/Subcommittee: F01.02

    DOI: 10.1520/STP39104S