Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK51A
Wavelength:
µm
(0.280 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.82348938-0.0126281485λ^{2}+0.0212484444λ^{-2}-0.000445653258λ^{-4}+0.0001038003λ^{-6}-4.7255594\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -1.57e-07 1.4e-08 -2.98e-11 5.62e-07 8.34e-10 0.148 nd: 1.696800 Vd: 55.534184 glass_code: 697555 glass_status: standard density: 3.56 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.3e-06 K-1 - temperature_range: 20 300 °C coefficient: 8.1e-06 K-1 dPgF: -0.0065 climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)