Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF67-25
Wavelength:
µm
(0.350–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.36012388λ^2}{λ^2-103.579888}+\frac{2.09601012λ^2}{λ^2-0.011037962}+\frac{0.333537105λ^2}{λ^2-0.0449413554}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 3.22e-06 1.64e-08 -4.25e-11 8.62e-07 7.87e-10 0.235
nd: 1.882590
Vd: 37.185491
glass_code: 883372
density: 5.5 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.5e-06 K-1
dPgF: -0.0047
climatic_resistance: 1.0
Comments
anneal rate:25°C/h
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets