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Optical constants of OHARA - BAL (Barium, low-index)
BAL14
Wavelength:
µm
(0.360 – 0.9)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.421996-0.009200161λ^{2}+0.01374045λ^{-2}+0.000348582λ^{-4}-1.664649\text{×}10^{-05}λ^{-6}+1.313751\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 25.0 °C
nd: 1.568832
Vd: 56.339266
glass_code: 569563
glass_status: preferred
density: 3.08 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.3e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.5e-06 K-1
dPgF: -0.0025
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets