Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF81
Wavelength:
µm
(0.340 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.1745656-0.0098395711λ^{2}+0.034884391λ^{-2}-0.00052006433λ^{-4}+0.00017902813λ^{-6}-6.3116821\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.18e-06 1.52e-08 1.59e-10 5.99e-07 9.97e-11 0.282
nd: 1.808800
Vd: 41.010308
glass_code: 809410
density: 4.55 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.4e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.1e-06 K-1
dPgF: -0.0065
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)