Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF3B
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.66486969λ^2}{λ^2-0.00895646712}+\frac{0.30162248λ^2}{λ^2-0.0350299695}+\frac{1.1973888λ^2}{λ^2-123.334438}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -3.14e-06 1.29e-08 -3.08e-11 6.91e-07 5.97e-10 0.223
nd: 1.744000
Vd: 44.900027
glass_code: 744449
glass_status: standard
density: 4.39 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.7e-06 K-1
dPgF: -0.0041
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets