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Optical constants of SCHOTT - BaK (Barium crown)
N-BAK4HT

Wavelength: µm
 (0.334 – 2.5)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.28834642λ^2}{λ^2-0.00779980626}+\frac{0.132817724λ^2}{λ^2-0.0315631177}+\frac{0.945395373λ^2}{λ^2-105.965875}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.06e-06 1.44e-08 -2.23e-11 5.46e-07 6.05e-10 0.189
nd: 1.56883
Vd: 55.98
glass_code: 569560.305
glass_status: standard
density: 3.046 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.99e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.93e-06 K-1
dPgF: -0.001
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 1.2
alkali_resistance: 1.0
phosphate_resistance: 1.0

Comments

References

SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets

Data

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

INFO

SCHOTT AG

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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