Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF50B
Wavelength:
µm
(0.300 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.07031881-0.0135921167λ^{2}+0.0258190179λ^{-2}-1.6644976\text{×}10^{-05}λ^{-4}+6.94966225\text{×}10^{-05}λ^{-6}-2.88382024\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 2.55e-06 1.98e-08 -2.57e-13 4.22e-07 -1.44e-10 0.256
nd: 1.772501
Vd: 49.613485
glass_code: 773496
glass_status: standard
density: 4.24 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.5e-06 K-1
dPgF: -0.0097
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)