Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF52LA-25
Wavelength:
µm
(0.340 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.85743559λ^2}{λ^2-0.00962363637}+\frac{0.323469816λ^2}{λ^2-0.0398398385}+\frac{1.2894946λ^2}{λ^2-98.4654718}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.23e-06 1.56e-08 -3.55e-11 8.33e-07 7.37e-10 0.217
nd: 1.808820
Vd: 40.970313
glass_code: 809410
density: 4.56 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.6e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 8.3e-06 K-1
dPgF: -0.0058
climatic_resistance: 1.0
Comments
anneal rate:25℃/h
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets