Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF50
Wavelength:
µm
(0.313–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.13754975λ^2}{λ^2-87.6010757}+\frac{0.27377557λ^2}{λ^2-0.0348809856}+\frac{1.89653755λ^2}{λ^2-0.00982589937}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.59e-06 1.77e-08 -4.18e-11 8.47e-07 3.91e-10 0.15
nd: 1.803370
Vd: 45.491557
glass_code: 803455
density: 4.89 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.2e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 7.5e-06 K-1
dPgF: -0.0089
climatic_resistance: 1.0
Comments
anneal rate:4℃/h
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets