Optical constants of SCHOTT - LaK (Lanthanum crown)
N-LAK14
Wavelength:
µm
(0.31–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.50781212λ^2}{λ^2-0.00746098727}+\frac{0.318866829λ^2}{λ^2-0.0242024834}+\frac{1.14287213λ^2}{λ^2-80.9565165}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 2.68e-06 1.15e-08 -1.44e-11 3.72e-07 5.53e-10 0.226 nd: 1.6968 Vd: 55.41 glass_code: 697554.363 glass_status: standard density: 3.63 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 5.5e-06 K-1 - temperature_range: 20 300 °C coefficient: 6.9e-06 K-1 dPgF: -0.0079 climatic_resistance: 3.0 stain_resistance: 2.0 acid_resistance: 52.3 alkali_resistance: 1.0 phosphate_resistance: 3.0
Comments
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets