Optical constants of VITRON - IG
IG 4
Wavelength:
µm
(1–14.0)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=2.810961+\frac{3.041642λ^2}{λ^2-0.398128^2}+\frac{0.863445λ^2}{λ^2-42.516520^2}$$Comments
Room temperature. Refractive index is relative to air at standard conditions; Wavelength in dispersion formula is as measured in air and expressed in micrometers.
References
1) VITRON datasheet IG-4 June 2014
2) Dr. Rolf Henkel (VITRON Spezialwerkstoffe GmbH) - private communications