Optical constants of SCHOTT - LaF (Lanthanum flint)
N-LAF32
Wavelength:
µm
(0.35–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.91731106λ^2}{λ^2-0.00978600358}+\frac{0.224019825λ^2}{λ^2-0.0386141473}+\frac{1.22087075λ^2}{λ^2-84.6431265}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 3.8e-06 1.1e-08 -1.83e-11 6.37e-07 8.03e-10 0.196
nd: 1.79457E+00
Vd: 4.55300E+01
glass_code: 795455.433
glass_status: preferred
density: 4.325 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.89e-06 K-1
- temperature_range: 20 300 °C
coefficient: 6.98e-06 K-1
dPgF: -0.0075
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 51.2
alkali_resistance: 1.0
phosphate_resistance: 2.0
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets