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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)