Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF7
Wavelength:
µm
(0.350 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.0798693-0.0120988227λ^{2}+0.0313371888λ^{-2}+0.000985836878λ^{-4}-1.3379864\text{×}10^{-05}λ^{-6}+5.4990762\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.02e-06 1.7e-08 -1.39e-10 6.63e-07 4.31e-10 0.279
nd: 1.781796
Vd: 37.094648
glass_code: 782371
density: 3.77 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.5e-06 K-1
dPgF: -0.0019
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)