NaF (Sodium fluoride)

Glasses, oxides and dielectrics

1 dataset, together covering 0.15–17 µm. Default: Li 1976: n 0.15–17 µm.

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Datasets

Li 1976: n 0.15–17 µm n 0.15–17 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# NaF (Sodium fluoride): Li 1976: n 0.15–17 µm
naf = ls.fetch_refractiveindex("main", "NaF", "Li", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(naf.range_nm)  # (150, 17000) nm
eps = naf.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_be3996eeed94/lightsmith"
naf = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(naf.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (naf/li-1976).

# ... load naf as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=naf)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=1000, 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_be3996eeed94/lightsmith?model=drude_lorentz"
naf_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))

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

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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 NaF (Sodium fluoride)

Sodium fluoride (NaF) is a white crystalline solid that, when purified, can be processed into transparent optical components. With a broad transparency window spanning from the ultraviolet to the mid-infrared regions, NaF is particularly valuable for certain optical applications, especially in deep ultraviolet systems. However, like some other alkali halides, NaF is sensitive to moisture and can be hygroscopic, making it imperative to ensure proper handling and storage to maintain its optical qualities.

Other names: Sodium fluoride, Sodium(I) fluoride

API: /v1/materials/mat_4b1802641e94 · slug naf