Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF71
Wavelength:
µm
(0.360 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.30457034-0.0157032075λ^{2}+0.0374207147λ^{-2}+0.00217455908λ^{-4}-0.000149305709λ^{-6}+1.85063226\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.69e-06 1.66e-08 -1.31e-10 9.42e-07 9.19e-10 0.249
nd: 1.850260
Vd: 32.307713
glass_code: 850323
density: 4.22 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.2e-06 K-1
dPgF: 0.0018
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)