Refractive index of Te (Tellurium)

import lightsmith as ls

# Te (Tellurium): Caldwell and Fan 1959: n(e) 4.0–14 µm
te = ls.fetch_refractiveindex("main", "Te", "Caldwell-e", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(te.range_nm)  # (4000, 14000) nm
eps = te.eps([7480])  # complex permittivity

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_d6ca7c79e494/lightsmith"
te = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(te.source)  # citation and provenance travel with the data

# ... load te as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=te)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=4000, stop_nm=14000, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_d6ca7c79e494/lightsmith?model=drude_lorentz"
te_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))