Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF1
Wavelength:
µm
(0.340 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.81903533-0.0164493508λ^{2}+0.0136602235λ^{-2}+0.0024815081λ^{-4}-0.000258533047λ^{-6}+1.30918358\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1e-06 2.31e-08 -1.6e-10 5.94e-07 -4.95e-10 0.215
nd: 1.693631
Vd: 49.233011
glass_code: 694492
density: 3.85 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.5e-06 K-1
dPgF: -0.0045
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)