Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF2
Wavelength:
µm
(0.340 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.87222927-0.00570883559λ^{2}+0.0292421752λ^{-2}-0.00146115324λ^{-4}+0.000252525251λ^{-6}-1.08672409\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -4.12e-06 2.75e-08 -1.05e-10 8.05e-07 -8.24e-10 0.107
nd: 1.716996
Vd: 47.920216
glass_code: 717479
density: 4.25 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.4e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.1e-06 K-1
dPgF: -0.0038
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)