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Fresnel Coefficients of Metals

​
Fresnel coefficients
reflectance plot
phase plot
ñ = n + κ i
n
0.421
κ
2.345
metal
ñ at λ = 550 nm
ñ at λ = 2500 nm
Au
0.421 + 2.345 i
1.1675 + 15.934 i
Ag
0.145 + 3.190 i
0.902 + 16.305 i
Al
0.965 + 6.399 i
3.082 + 24.704 i
Cu
0.676 + 2.624 i
1.249 + 16.572 i
R
p
R
s
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)
n
and
κ
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.

References

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

External Links

Permanent Citation

Tayari Coleman, Anna Petrova-Mayor
​
​"Fresnel Coefficients of Metals"​
​http://demonstrations.wolfram.com/FresnelCoefficientsOfMetals/​
​Wolfram Demonstrations Project​
​Published: August 31, 2020
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