Optical constants of OHARA - BAL (Barium, low-index)
BAL35Y
Wavelength:
µm
(0.29–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.26231429λ^2}{λ^2-0.00695586355}+\frac{0.22515421λ^2}{λ^2-0.0221310699}+\frac{0.639119345λ^2}{λ^2-63.1662736}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 3.6e-06 1.41e-08 -3.59e-11 4.39e-07 5.79e-10 0.167 nd: 1.589130 Vd: 61.233033 glass_code: 589612 density: 3.23 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 5.7e-06 K-1 - temperature_range: 20 300 °C coefficient: 7.2e-06 K-1 dPgF: -0.0026 climatic_resistance: 2.0 acid_resistance: 4.2 phosphate_resistance: 1.0
Comments
Improved XMT at 365
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets