Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF73
Wavelength:
µm
(0.320 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.507090015λ^2}{λ^2-0.0349987602}+\frac{1.9243026λ^2}{λ^2-0.00942878144}+\frac{1.4988641λ^2}{λ^2-116.086666}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 20.0 ℃ thermal_dispersion: - type: "Schott formula" coefficients: 1.2e-06 1.22e-08 -2.53e-11 8.04e-07 7.88e-10 0.213 nd: 1.881000 Vd: 40.161331 glass_code: 881402 density: 5.2 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 6.8e-06 K-1 - temperature_range: 20 300 ℃ coefficient: 8.6e-06 K-1 dPgF: -0.008 climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets