IG 2 (VITRON)

Glasses, oxides and dielectrics supplier-datasheet Supplier: VITRON

1 dataset, together covering 1–12 µm. Default: IG 2.

Compare datasets

Tick datasets in the list to add them to the plot (up to 12).

Datasets

IG 2 n,k 1–12 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# IG 2 (VITRON): IG 2
vitron_ig2 = ls.fetch_refractiveindex("specs", "VITRON-infrared", "IG2", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(vitron_ig2.range_nm)  # (1000, 12000) nm
eps = vitron_ig2.eps([3460])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_58833d6d5511/lightsmith"
vitron_ig2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(vitron_ig2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (vitron-ig2/vitron).

# ... load vitron_ig2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=vitron_ig2)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=1000, stop_nm=12000, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_58833d6d5511/lightsmith?model=drude_lorentz"
vitron_ig2_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))

A dispersive Drude–Lorentz model for time-domain solvers.

Materials guide Open a sphere of it in Studio Quick start Ask the community

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

About IG 2 (VITRON)

Other names: IG2

API: /v1/materials/mat_12feadbcf5d0 · slug vitron-ig2