Optical constants of SCHOTT - LaF (Lanthanum flint)
N-LAF35
Wavelength:
µm
(0.31–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.51697436λ^2}{λ^2-0.00750943203}+\frac{0.455875464λ^2}{λ^2-0.0260046715}+\frac{1.07469242λ^2}{λ^2-80.5945159}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 8.98e-06 1.26e-08 -1.23e-11 6.24e-07 6.86e-10 0.194
nd: 1.7433
Vd: 49.4
glass_code: 743494.412
glass_status: standard
density: 4.115 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.27e-06 K-1
- temperature_range: 20 300 °C
coefficient: 6.38e-06 K-1
dPgF: -0.0084
climatic_resistance: 2.0
stain_resistance: 1.0
acid_resistance: 52.3
alkali_resistance: 1.0
phosphate_resistance: 3.3
Comments
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets