Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF92
Wavelength:
µm
(0.360 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.86762237λ^2}{λ^2-123.07862}+\frac{0.375569196λ^2}{λ^2-0.059664373}+\frac{2.45933103λ^2}{λ^2-0.014148158}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: -5.53e-07 1.56e-08 -5.25e-11 1e-06 1.17e-09 0.275
nd: 2.003300
Vd: 28.316305
density: 5.02 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.9e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 8.7e-06 K-1
dPgF: 0.0057
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets