Optical constants of SCHOTT - LaSF (Lanthanum dense flint)
LASF35
Wavelength:
µm
(0.37–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{2.45505861λ^2}{λ^2-0.0135670404}+\frac{0.453006077λ^2}{λ^2-0.054580302}+\frac{2.3851308λ^2}{λ^2-167.904715}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 20.0 ℃ thermal_dispersion: - type: "Schott formula" coefficients: 1.43e-07 8.71e-09 -2.71e-11 1.02e-06 1.5e-09 0.263 nd: 2.02204 Vd: 29.06 glass_status: standard density: 5.41 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 7.4e-06 K-1 - temperature_range: 20 300 ℃ coefficient: 8.5e-06 K-1 dPgF: 0.0033 climatic_resistance: 1.0 stain_resistance: 0.0 acid_resistance: 1.3 alkali_resistance: 1.0 phosphate_resistance: 1.3
Comments
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets