Optical constants of OHARA - LAM (Lanthanum, medium-index)
S-LAM51
Wavelength:
µm
(0.34–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.638472λ^2}{λ^2-0.00904853452}+\frac{0.188330533λ^2}{λ^2-0.0372740173}+\frac{1.47502357λ^2}{λ^2-137.77005}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 1.39e-06 1.16e-08 -3.52e-11 4.18e-07 3.81e-10 0.279 nd: 1.699998 Vd: 48.080479 glass_code: 700481 glass_status: special density: 3.79 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 7.1e-06 K-1 - temperature_range: 20 300 °C coefficient: 8e-06 K-1 dPgF: -0.0041 climatic_resistance: 2.0 acid_resistance: 51.2 phosphate_resistance: 1.0
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets