Refractive index of Soda lime glass

import lightsmith as ls

# Soda lime glass: Rubin 1985: Green; n,k 0.32–4.6 µm
soda_lime = ls.fetch_refractiveindex("glass", "soda-lime", "Rubin-green", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(soda_lime.range_nm)  # (320, 4600) nm
eps = soda_lime.eps([633])  # complex permittivity

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_90adc4d306ba/lightsmith"
soda_lime = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(soda_lime.source)  # citation and provenance travel with the data

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