Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF52
Wavelength:
µm
(0.320 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=3.10868845-0.0135809895λ^{2}+0.027901619λ^{-2}+0.000460094924λ^{-4}+3.20811469\text{×}10^{-05}λ^{-6}-2.81458925\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 7.56e-06 1.95e-08 -5.14e-11 6.79e-07 7.1e-10 0.233
nd: 1.785901
Vd: 44.206711
glass_code: 786442
density: 4.39 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.9e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.2e-06 K-1
dPgF: -0.0082
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)