Refractive index of K108 (LZOS)

import lightsmith as ls

# K108 (LZOS): Bassarab et al. 2023: n,k 0.185–150000 µm
k108 = ls.fetch_refractiveindex("glass", "K108-LZOS", "Bassarab", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(k108.range_nm)  # (185.03, 1.5e+08) nm
eps = k108.eps([633])  # complex permittivity

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_36da098767c7/lightsmith"
k108 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(k108.source)  # citation and provenance travel with the data

# ... load k108 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=k108)],
    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