Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF53
Wavelength:
µm
(0.300–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.52005515λ^2}{λ^2-0.00746606502}+\frac{1.09140777λ^2}{λ^2-81.9422153}+\frac{0.452588708λ^2}{λ^2-0.0263954349}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 8.12e-06 1.8e-08 -3.55e-11 6.59e-07 7e-10 0.185
nd: 1.743300
Vd: 49.221808
glass_code: 743492
density: 4.16 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.5e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.3e-06 K-1
dPgF: -0.009
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets