Optical constants of CDGM - LAF (Lanthanum flint)
D-LAF050
Wavelength:
µm
(0.290 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=3.0588612-0.014713037λ^{2}+0.023619508λ^{-2}+0.00067085861λ^{-4}-2.760135\text{×}10^{-05}λ^{-6}+2.1299817\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.02e-06 1.48e-08 -2.59e-11 7.08e-07 1.19e-10 0.135
n_d: 1.768419
V_d: 49.290155
glass_code: 768493
density: 4.51 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.4e-06 K-1
ΔP_gF: -0.0109
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)