Fresnel Coefficients of Metals

This Demonstration calculates the Fresnel coefficients of reflection for metals. Light travels through air and is incident on the metal. You can vary the real and imaginary parts (extinction coefficient) and of the index of refraction of the metal. These determine the amplitude of reflection, the reflectance and the induced phase changes upon reflection as functions of the angle of incidence (AOI). A reference table showing the index of refraction for four metals is also provided.


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[1] E. Hecht, Optics, 5th ed., Boston: Pearson Education, Inc., 2017.
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