Optical constants of OHARA - BAL (Barium, low-index)
BAL2
Wavelength:
µm
(0.350 – 0.9)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.424312-0.00858474λ^{2}+0.01472045λ^{-2}+0.0005504561λ^{-4}-3.170738\text{×}10^{-05}λ^{-6}+2.420757\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false λ_is_vacuum: false temperature: 25.0 °C coefficients_of_thermal_dispersion: 4.152e-06 0.0 0.0 0.0 0.0 0.0 n_d: 1.570989 V_d: 50.797474 glass_code: 571508 glass_status: preferred density: 3.1 g/cm3 coefficient_of_thermal_expansion_1: 1e-05 K-1 coefficient_of_thermal_expansion_2: 1.16e-05 K-1 ΔP_gF: -0.0007
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets