Optical constants of SCHOTT - LaK (Lanthanum crown)
N-LAK34
Wavelength:
µm
(0.29–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.26661442λ^2}{λ^2-0.00589278062}+\frac{0.665919318λ^2}{λ^2-0.0197509041}+\frac{1.1249612λ^2}{λ^2-78.8894174}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 1.96e-06 9.65e-09 4.4e-12 4.91e-07 5.28e-10 0.161 nd: 1.72916 Vd: 54.5 glass_code: 729545.402 glass_status: standard density: 4.02 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 5.81e-06 K-1 - temperature_range: 20 300 °C coefficient: 6.91e-06 K-1 dPgF: -0.0079 climatic_resistance: 1.0 stain_resistance: 0.0 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