Refractive index of LaAlO₃ (Lanthanum aluminate)

import lightsmith as ls

# LaAlO3 (Lanthanum aluminate): Chernova et al. 2017: n,k 0.14–1.67 µm
laalo3 = ls.fetch_refractiveindex("main", "LaAlO3", "Chernova", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(laalo3.range_nm)  # (140.89, 1675.5) nm
eps = laalo3.eps([633])  # complex permittivity

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_bdd96ebe50dc/lightsmith"
laalo3 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(laalo3.source)  # citation and provenance travel with the data

# ... load laalo3 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=laalo3)],
    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