Optical constants of OHARA - LAM (Lanthanum, medium-index)
S-LAM2
Wavelength:
µm
(0.34–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.7713λ^2}{λ^2-0.00976652444}+\frac{0.19581423λ^2}{λ^2-0.0412718628}+\frac{1.19487834λ^2}{λ^2-110.458122}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 3.01e-07 1.12e-08 -3.68e-11 6.07e-07 6.45e-10 0.245 nd: 1.743997 Vd: 44.786431 glass_code: 744448 density: 4.32 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 7.4e-06 K-1 - temperature_range: 20 300 °C coefficient: 8.7e-06 K-1 dPgF: -0.0035 climatic_resistance: 2.0 acid_resistance: 52.2 phosphate_resistance: 3.0
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets