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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF61
Wavelength:
µm
(0.340 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.23113634-0.0129344158λ^{2}+0.0306465184λ^{-2}+0.0006186837λ^{-4}+1.99460431\text{×}10^{-05}λ^{-6}+9.30145697\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.75e-06 1.72e-08 -5.45e-12 5.42e-07 3.22e-10 0.287
nd: 1.822412
Vd: 42.722851
glass_code: 822427
density: 4.92 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.5e-06 K-1
dPgF: -0.0069
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)