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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF55
Wavelength:
µm
(0.350 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.01845855-0.0104580593λ^{2}+0.0288640175λ^{-2}+0.000697086524λ^{-4}+6.35741467\text{×}10^{-06}λ^{-6}+2.82444289\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.5e-06 2.11e-08 -8.33e-11 7e-07 -1.49e-10 0.249
nd: 1.762004
Vd: 40.106913
glass_code: 762401
density: 4.3 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.2e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.5e-06 K-1
dPgF: -0.004
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)