Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK1
Wavelength:
µm
(0.290 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.70432455-0.0100067787λ^{2}+0.018102254λ^{-2}-2.16494884\text{×}10^{-05}λ^{-4}+3.81507477\text{×}10^{-05}λ^{-6}-1.57874424\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false λ_is_vacuum: false temperature: 20.0 °C coefficients_of_thermal_dispersion: -5.01e-06 2.49e-08 -4.65e-11 5.72e-07 -7.93e-10 0.06 n_d: 1.659500 V_d: 57.385393 glass_code: 660574 density: 3.94 g/cm3 coefficient_of_thermal_expansion_1: 7.7e-06 K-1 coefficient_of_thermal_expansion_2: 8.7e-06 K-1 ΔP_gF: -0.0037 climatic_resistance: 4.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)