Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF68C
Wavelength:
µm
(0.330 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.58833884λ^2}{λ^2-0.00689365045}+\frac{0.851761035λ^2}{λ^2-0.0288290435}+\frac{1.58277416λ^2}{λ^2-125.035659}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 20.0 ℃ thermal_dispersion: - type: "Schott formula" coefficients: 6.22e-07 1.34e-08 -3.94e-11 8.98e-07 8.81e-10 0.175 nd: 1.883000 Vd: 40.847465 glass_code: 883409 density: 5.34 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 7e-06 K-1 - temperature_range: 20 300 ℃ coefficient: 8.7e-06 K-1 dPgF: -0.0084 climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets