Optical constants of CDGM - BAK (Barium crown)
H-BAK4
Wavelength:
µm
(0.290 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.37934396-0.0111573292λ^{2}+0.010770657λ^{-2}+0.000537494005λ^{-4}-4.85885263\text{×}10^{-05}λ^{-6}+2.43110267\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 9.33e-07 2.01e-08 -2.04e-11 3.94e-07 2.14e-10 0.158
nd: 1.552479
Vd: 63.372062
glass_code: 552634
density: 2.9 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.6e-06 K-1
dPgF: -0.0022
climatic_resistance: 2.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)