Optical constants of SCHOTT - LaSF (Lanthanum dense flint)
P-LASF47
Wavelength:
µm
(0.334–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.85543101λ^2}{λ^2-0.0100328203}+\frac{0.315854649λ^2}{λ^2-0.0387095168}+\frac{1.28561839λ^2}{λ^2-94.5421507}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 7.87e-06 1.09e-08 -1.56e-11 7.58e-07 8.92e-10 0.218
nd: 1.8061
Vd: 40.9
glass_code: 806409.454
glass_status: standard
density: 4.538 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.04e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.27e-06 K-1
dPgF: -0.0079
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 51.4
alkali_resistance: 1.0
phosphate_resistance: 2.2
Comments
suitable for precision molding
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets