Optical constants of SCHOTT - LaSF (Lanthanum dense flint)
LASFN9
Wavelength:
µm
(0.365 – 2.5)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2-1=\frac{1.97888194λ^2}{λ^2-0.0118537266}+\frac{0.320435298λ^2}{λ^2-0.052738177}+\frac{1.92900751λ^2}{λ^2-166.25654}$$Conditions & Spec sheet
n_is_absolute: false λ_is_vacuum: false temperature: 20.0 °C coefficients_of_thermal_dispersion: 9.44e-07 1.14e-08 -1.87e-11 9.22e-07 1.22e-09 0.255 n_d: 1.85025 V_d: 32.17 glass_code: 850322.444 glass_status: preferred density: 4.44 g/cm3 coefficient_of_thermal_expansion_1: 7.4e-06 K-1 coefficient_of_thermal_expansion_2: 8.4e-06 K-1 ΔP_gF: 0.0036 climatic_resistance: 2.0 stain_resistance: 0.0 acid_resistance: 2.0 alkali_resistance: 1.0 phosphate_resistance: 1.0
Comments
was replaced by N-LASF9
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets