Refractive index of Y₃Al₅O₁₂ (Yttrium aluminium garnet, YAG)

import lightsmith as ls

# Y3Al5O12 (Yttrium aluminium garnet, YAG): Franta et al. 2021: n,k 0.120–400 µm
y3al5o12 = ls.fetch_refractiveindex("main", "Y3Al5O12", "Franta", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(y3al5o12.range_nm)  # (119.914, 400286) nm
eps = y3al5o12.eps([633])  # complex permittivity

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_16eb14607c29/lightsmith"
y3al5o12 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(y3al5o12.source)  # citation and provenance travel with the data

# ... load y3al5o12 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=y3al5o12)],
    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