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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 °C
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 °C
coefficient: 7.4e-06 K-1
- temperature_range: 20 300 °C
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