Tb₃Ga₅O₁₂ (Terbium gallium garnet, TGG)

2 datasets, together covering 0.12–400 µm. Default: Schlarb and Sugg 1994: n 0.405–1.18 µm.

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Datasets

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# Tb3Ga5O12 (Terbium gallium garnet, TGG): Schlarb and Sugg 1994: n 0.405–1.18 µm
tb3ga5o12 = ls.fetch_refractiveindex("main", "Tb3Ga5O12", "Schlarb", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(tb3ga5o12.range_nm)  # (404.66, 1176.68) nm
eps = tb3ga5o12.eps([633])  # 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_ed1f2a79978b/lightsmith"
tb3ga5o12 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(tb3ga5o12.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (tb3ga5o12/schlarb-sugg-1994).

# ... load tb3ga5o12 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=tb3ga5o12)],
    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

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

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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 Tb3Ga5O12 (Terbium gallium garnet, TGG)

Terbium gallium garnet (Tb₃Ga₅O₁₂, TGG) is a magneto-optical crystal that exhibits excellent transparency in the visible and near-infrared regions. Its high Verdet constant makes it a prime material for use in Faraday rotators and optical isolators, key components in lasers and other optical systems that require the prevention of back-reflected light. TGG is known for its low absorption loss and high thermal conductivity, making it ideal for high-power laser applications. These properties, combined with its mechanical stability, ensure its performance in demanding environments such as laser systems used in industrial, medical, and research applications.

Other names: Terbium gallium garnet, TGG, Terbium gallium garnet, TGG, Terbium gallate garnet, Magneto-optical garnet

API: /v1/materials/mat_daa1d01c5e46 · slug tb3ga5o12