Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK8A
Wavelength:
µm
(0.320 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.89697306-0.0143738053λ^{2}+0.0222280432λ^{-2}+0.000105067282λ^{-4}+5.16989124\text{×}10^{-05}λ^{-6}-1.90417816\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false λ_is_vacuum: false temperature: 20.0 °C coefficients_of_thermal_dispersion: 4.02e-06 1.82e-08 -1.04e-10 4.87e-07 9.07e-10 0.216 n_d: 1.720000 V_d: 50.351963 glass_code: 720503 glass_status: preferred density: 3.77 g/cm3 coefficient_of_thermal_expansion_1: 5.3e-06 K-1 coefficient_of_thermal_expansion_2: 7.2e-06 K-1 ΔP_gF: -0.0071 climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)