LaF₃ (Lanthanum fluoride)

Glasses, oxides and dielectrics anisotropic

4 datasets, together covering 0.02993–12 µm. Default: Laihoa and Lakkistoa 1983: n(o) 0.35–0.70 µm.

Compare datasets

Tick datasets in the list to add them to the plot (up to 12).

Datasets

Crystal

Thin film

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# LaF3 (Lanthanum fluoride): Laihoa and Lakkistoa 1983: n(o) 0.35–0.70 µm
laf3 = ls.fetch_refractiveindex("main", "LaF3", "Laihoa-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(laf3.range_nm)  # (350, 700) nm
eps = laf3.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_981e8d8a262f/lightsmith"
laf3 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(laf3.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (laf3/laihoa-lakkistoa-1983-o).

# ... load laf3 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=laf3)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=700, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_981e8d8a262f/lightsmith?model=drude_lorentz"
laf3_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))

A dispersive Drude–Lorentz model for time-domain solvers.

Materials guide Open a sphere of it in Studio Quick start Ask the community

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

About LaF3 (Lanthanum fluoride)

Lanthanum fluoride (LaF₃) is a white, crystalline, inorganic compound that is used in a variety of optical applications. It is a popular choice for the production of fluoride glass and is also used as a scintillation material in radiation detection. Due to its low refractive index, it is often used in antireflection coatings, especially for infrared optics. The compound is stable, has good thermal durability, and exhibits a wide transparency range, making it a versatile material for various optical systems. Its low solubility in water also makes it preferable in moisture-sensitive applications. LaF₃ is an important material in both research and commercial optical technologies. Mineral: Fluocerite-(La)

Other names: Lanthanum fluoride, Lanthanum trifluoride, Lanthanum(III) fluoride, Fluocerite-(La)

API: /v1/materials/mat_4203960508be · slug laf3