Refractive index of AgGaS₂-AgInS₂

import lightsmith as ls

# AgGaS2-AgInS2: Kato et al. 2021: n(o) 0.565–10.6 µm
aggas2_agins2 = ls.fetch_refractiveindex("other", "AgGaS2-AgInS2", "Kato-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(aggas2_agins2.range_nm)  # (565, 10600) nm
eps = aggas2_agins2.eps([633])  # complex permittivity

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_c46096130c19/lightsmith"
aggas2_agins2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(aggas2_agins2.source)  # citation and provenance travel with the data

# ... load aggas2_agins2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=aggas2_agins2)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=565, stop_nm=1000, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength