Optical constants of SCHOTT - LaK (Lanthanum crown)
N-LAK8
Wavelength:
µm
(0.31–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.33183167λ^2}{λ^2-0.00620023871}+\frac{0.546623206λ^2}{λ^2-0.0216465439}+\frac{1.19084015λ^2}{λ^2-82.5827736}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 4.1e-06 1.25e-08 -1.6e-11 4.3e-07 6.29e-10 0.213 nd: 1.713 Vd: 53.83 glass_code: 713538.375 glass_status: standard density: 3.749 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 5.6e-06 K-1 - temperature_range: 20 300 °C coefficient: 6.7e-06 K-1 dPgF: -0.0083 climatic_resistance: 3.0 stain_resistance: 2.0 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