Optical constants of OHARA - BAH (Barium, high-index)
S-BAH54
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.802774-0.011441428λ^{2}+0.023830231λ^{-2}+0.00057322688λ^{-4}+1.1516047\text{×}10^{-05}λ^{-6}+1.2065896\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 8.228e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.695000
Vd: 42.167111
glass_code: 695422
glass_status: preferred
density: 3.3 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.1e-06 K-1
dPgF: -0.0039
acid_resistance: 1.0
phosphate_resistance: 1.0
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets