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## Optical constants of OHARA - BAH (Barium, high-index)

S-BAH28

Wavelength:
µm

(0.36 – 2.4)

### Complex refractive index (*n+ik)*

n
k
LogX
LogY
eV

### Derived optical constants

### Dispersion formula

$$n^2-1=\frac{1.69493484λ^2}{λ^2-0.010272319}+\frac{0.192890298λ^2}{λ^2-0.052118764}+\frac{1.56385948λ^2}{λ^2-137.818035}$$### Conditions & Spec sheet

n_absolute: false wavelength_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 3.8e-06 1.33e-08 -3.17e-11 7.28e-07 9.35e-10 0.261 nd: 1.723420 Vd: 37.955602 glass_code: 723380 density: 3.67 g/cm^{3}thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.6e-06 K^{-1}- temperature_range: 20 300 °C coefficient: 7.3e-06 K^{-1}dPgF: 0.0035 climatic_resistance: 1.0 acid_resistance: 4.0 phosphate_resistance: 1.0

### Comments

Recommended

### References

OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)

See also OHARA glass data sheets