The refractive indices of 13 optical glasses are reported for the wavelength range from about 0.43 to 4.25 µ. Transmittance data for three thicknesses of the same glasses are given for the wavelength range from about 1.0 to 5.0 µ along with the calculated absorption coefficients.
GIVEN W. CLEEK, JOHN J. VILLA, and C. H. HAHNER, "Refractive Indices and Transmittances of Several Optical Glasses in the Infrared," J. Opt. Soc. Am. 49, 1090-1095 (1959)