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Optical constants of LaF3 (Lanthanum fluoride)
Amotchkina et al, 2020: n 0.4-12 µm, k 9.5-12 µm

Wavelength: µm
 (0.4 – 12)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=-0.812958+\frac{2.030974λ^2}{λ^2-0.01057737}+\frac{0.024492λ^2}{λ^2+0.851254}+\frac{4.544580λ^2}{λ^2-1149.999773}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
substrate: ZnSe
film_thickness: 1.368 µm

Comments

1.368 µm LaF3 film deposited on 1 mm thick ZnSe substratee by e-beam evaporation at 120 °C substrate temperature.

References

T. Amotchkina, M. Trubetskov, D. Hahner, V. Pervak, Characterization of e-beam evaporated Ge, YbF3, ZnS, and LaF3 thin films for laser-oriented coatings, Appl. Opt. 59, A40-A47 (2020) (Data kindly provided by Tatiana Amotchkina [data] [description])

Data

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

INFO

Lanthanum fluoride, LaF3

Other names

  • Lanthanum trifluoride
  • Lanthanum(III) fluoride

Mineral

  • Fluocerite-(La)

External links