Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF85LN-25
Wavelength:
µm
(0.340 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.22657126λ^2}{λ^2-93.6444885}+\frac{0.367411998λ^2}{λ^2-0.0394561346}+\frac{1.93493865λ^2}{λ^2-0.00982834912}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.18e-06 1.74e-08 -3.81e-11 8.61e-07 5.26e-10 0.215
nd: 1.844430
Vd: 40.067973
glass_code: 844401
density: 4.96 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.3e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 8.2e-06 K-1
dPgF: -0.0062
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