Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK2A
Wavelength:
µm
(0.310 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.80801074-0.0109758888λ^{2}+0.0197813052λ^{-2}+0.000143229802λ^{-4}+2.39192838\text{×}10^{-05}λ^{-6}-7.82772539\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -5.27e-06 1.89e-08 -6.19e-11 5.63e-07 8.12e-10 0.135
nd: 1.692114
Vd: 54.570492
glass_code: 692545
density: 3.94 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.7e-06 K-1
dPgF: -0.0059
climatic_resistance: 2.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)