Refractive index of SiC (Silicon carbide)

import lightsmith as ls

# SiC (Silicon carbide): Wang et al. 2013: 4H-SiC; n(e) 0.405–2.33 µm
sic = ls.fetch_refractiveindex("main", "SiC", "Wang-4H-e", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(sic.range_nm)  # (404.7, 2325) nm
eps = sic.eps([633])  # complex permittivity

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_abec8a6fa3a9/lightsmith"
sic = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(sic.source)  # citation and provenance travel with the data

# ... load sic as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=sic)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=405, stop_nm=1000, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength