Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF2A
Wavelength:
µm
(0.310–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.76389273λ^2}{λ^2-0.00842148915}+\frac{0.407585264λ^2}{λ^2-0.0304194282}+\frac{1.27020239λ^2}{λ^2-89.5802552}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.27e-06 1.49e-08 -3.26e-11 6.27e-07 5.37e-10 0.2
nd: 1.802790
Vd: 46.761307
glass_code: 803468
density: 4.65 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.8e-06 K-1
dPgF: -0.0089
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets