Optical constants of CDGM - BAK (Barium crown)
H-BAK2
Wavelength:
µm
(0.280 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.618389223λ^2}{λ^2-0.00174653825}+\frac{0.718400306λ^2}{λ^2-0.0158112967}+\frac{1.07451466λ^2}{λ^2-126.584788}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.36e-06 2.63e-08 -8.17e-11 4.48e-07 -8.32e-10 0.226
nd: 1.539960
Vd: 59.724182
glass_code: 540597
density: 2.84 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 8e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 9.4e-06 K-1
dPgF: 0.0004
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets