Optical constants of SCHOTT - LaSF (Lanthanum dense flint)
N-LASF43
Wavelength:
µm
(0.35–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.93502827λ^2}{λ^2-0.0104001413}+\frac{0.23662935λ^2}{λ^2-0.0447505292}+\frac{1.26291344λ^2}{λ^2-87.437569}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.77e-06 1.14e-08 -2.68e-12 6.62e-07 8.84e-10 0.234
nd: 1.8061
Vd: 40.61
glass_code: 806406.426
glass_status: standard
density: 4.26 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.49e-06 K-1
- temperature_range: 20 300 °C
coefficient: 6.66e-06 K-1
dPgF: -0.0052
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 51.3
alkali_resistance: 1.0
phosphate_resistance: 2.0
Comments
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets