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Complex Index of Refraction Look-up Utility
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Complex Index of Refraction Look-up Utility
Instructions
Choose a material from the drop down menu, enter the incident wavelength, and click on "Calculate." The material's index of refraction and extinction coefficient will appear below.
Index of Refraction Explanation
The Index of Refraction of a material is the ratio of phase velocity of an electromagentic wave in free space to the phase velocity in the material. The index of refraction of two materials can be used to predict how light will pass from one medium to the other. The Extinction Coefficient is the imaginary part of the index of refraction.
These optical constants are calculated via linear interpolation on the optical constant values reported in the book
Handbook of Optical Constants of Solids
by Edward D. Palik
The graphs and numerical data can be found on the
Tabulated Optical Constants
page.
Material
Choose Material
Si
Silicon Nitride
SiO
2
Amorphous Silicon
Gallium Arsenide
Indium Phosphide
Metallic Aluminum
Nickel
Chromium
Copper
Silver
Material Index:
Material Extinction Coefficient
Incident Wavelength:
(in nanometers)
Error message:
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