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Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK11
Wavelength:
µm
(0.290 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.71757958-0.00952801665λ^{2}+0.0196309871λ^{-2}-0.000237384298λ^{-4}+8.48314788\text{×}10^{-05}λ^{-6}-4.09640039\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.34e-06 2.38e-08 -5.5e-11 4.75e-07 6.18e-11 0.228
nd: 1.664613
Vd: 54.657841
glass_code: 665546
density: 4.02 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.2e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.8e-06 K-1
dPgF: -0.0005
climatic_resistance: 3.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)