Optical Properties of the Metals Al, Co, Cu, Au, Fe, Pb, Ni, Pd, Pt, Ag, Ti and W in the Infrared and Far Infrared

摘要

Infrared optical constants collected from the literature are tabulated. Many measurements of the optical constants of metals have been made, primarily at near infrared, visible and ultraviolet wavelengths. Sievers and his coworkers have mesured Au and Pb in the far infrared. WE have compiled this data and have tabulated the real and imaginary parts of the dielectric function, epsilon sub 1 and epsilon sub 2, respectively, the index of refraction, n, and the extinction index, k, for each metal in the infrared. Drude model parameters giving a reasonable fit to the data are given for Au, Ag, Cu, Al, Pb, and W. In general, the Drude model is not expected to be appropriate for transition metals in the near and middle infrared, but a good fit to the measurements can be obtained for W with a Drude model dieletric function. A table of epsilon sub 1, epsilon 2, n and k is given for each metal, calculated from the Drude model using parameters obtained from fitting the measured values.