Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF61
Wavelength:
µm
(0.340 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.42742586λ^2}{λ^2-0.0344432015}+\frac{1.80371405λ^2}{λ^2-0.00878105468}+\frac{1.2694916λ^2}{λ^2-99.795367}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.38e-06 1.46e-08 -1.77e-11 7.39e-07 6.32e-10 0.229
nd: 1.822410
Vd: 42.714541
glass_code: 822427
density: 4.92 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.6e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 8.5e-06 K-1
dPgF: -0.0068
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