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Optical constants of SCHOTT - BaK (Barium crown)
N-BAK1

Wavelength: µm
 (0.3 – 2.5)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.12365662λ^2}{λ^2-0.00644742752}+\frac{0.309276848λ^2}{λ^2-0.0222284402}+\frac{0.881511957λ^2}{λ^2-107.297751}$$

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

Additional information

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 1.86e-07 1.29e-08 -1.87e-11 5.25e-07 5.46e-10 0.182
n_d: 1.5725
V_d: 57.55
glass_code: 573576.319
glass_status: standard
density: 3.19 g/cm3
coefficient_of_thermal_expansion_1: 7.6e-06 K-1
coefficient_of_thermal_expansion_2: 8.6e-06 K-1
ΔP_gF: 0.0002
climatic_resistance: 2.0
stain_resistance: 1.0
acid_resistance: 3.3
alkali_resistance: 1.2
phosphate_resistance: 2.0

References

1) SCHOTT optical glass data sheets 2015-07-22
2) SCHOTT Zemax catalog 2015-07-22

More info - wiki

SCHOTT AG is a German glass manufacturer. SCHOTT also publishes a glass catalog (SCHOTT Optical Glass Datasheets), which is a standard reference for the properties of many optical glasses.

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