Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF85A-25
Wavelength:
µm
(0.340 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.37428361λ^2}{λ^2-105.610997}+\frac{0.412199165λ^2}{λ^2-0.0373787374}+\frac{1.91320505λ^2}{λ^2-0.00975370563}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.25e-06 2.15e-08 -1.05e-10 8.21e-07 -6.33e-10 0.216
nd: 1.851100
Vd: 40.055609
glass_code: 851401
density: 5.22 g/cm3
thermal_expansion:
- temperature_range: 20 300 ℃
coefficient: 7.8e-06 K-1
dPgF: -0.0075
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