Optical constants of OHARA - BAH (Barium, high-index)
BAH26
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.7137156-0.0093481462λ^{2}+0.022190744λ^{-2}+0.00074154999λ^{-4}-2.1872211\text{×}10^{-05}λ^{-6}+3.821015\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.645e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.667551
Vd: 41.927521
glass_code: 668419
glass_status: preferred
density: 3.8 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.5e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.8e-06 K-1
dPgF: 0.0011
acid_resistance: 51.2
phosphate_resistance: 2.2
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets