Optical constants of CDGM - BAK (Barium crown)
H-BAK7A
Wavelength:
µm
(0.320 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.42067444-0.00907062595λ^{2}+0.0148479874λ^{-2}-1.63554726\text{×}10^{-05}λ^{-4}+3.76515875\text{×}10^{-05}λ^{-6}-1.56033963\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.77e-06 1.48e-08 2.37e-11 6.1e-07 7.99e-10 0.144
nd: 1.568828
Vd: 56.127804
glass_code: 569561
glass_status: preferred
density: 2.84 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 7.4e-06 K-1
dPgF: -0.0026
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets