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Optical constants of SCHOTT - LaSF (Lanthanum dense flint)
N-LASF44

Wavelength: µm
 (0.334 – 2.5)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.78897105λ^2}{λ^2-0.00872506277}+\frac{0.38675867λ^2}{λ^2-0.0308085023}+\frac{1.30506243λ^2}{λ^2-92.7743824}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.32e-06 1.12e-08 -8.52e-12 5.88e-07 7.13e-10 0.209
nd: 1.8042
Vd: 46.5
glass_code: 804465.444
glass_status: standard
density: 4.44 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.21e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.39e-06 K-1
dPgF: -0.0084
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 4.0
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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