Optical constants of Ge (Germanium)
Icenogle et al. 1976: n 2.5–12 µm; 293 K
Wavelength:
µm
(2.5–12)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=8.28156+\frac{6.72880λ^2}{λ^2-0.44105}+\frac{0.21307λ^2}{λ^2-3870.1}$$Comments
293 K (20 °C)
References
1) Icenogle et al.. Refractive indexes and temperature coefficients of germanium and silicon Appl. Opt. 15 2348-2351 (1976)
2) N. P. Barnes and M. S. Piltch. Temperature-dependent Sellmeier coefficients and nonlinear optics average power limit for germanium J. Opt. Soc. Am. 69 178-180 (1979)
*Ref. 2 provides temperature-dependent Sellmeier equations based on data from Ref. 1.