HgGa₂S₄ (Mercury gallium sulfide)

Semiconductors and photonic platforms anisotropic

2 datasets, together covering 0.6328–10.59 µm. Default: Kato et al. 2016: n(o) 0.633–10.6 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

# HgGa2S4 (Mercury gallium sulfide): Kato et al. 2016: n(o) 0.633–10.6 µm
hgga2s4 = ls.fetch_refractiveindex("main", "HgGa2S4", "Kato-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hgga2s4.range_nm)  # (632.8, 10591) nm
eps = hgga2s4.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_bcfff4b9fed0/lightsmith"
hgga2s4 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(hgga2s4.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (hgga2s4/kato-2016-o).

# ... load hgga2s4 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=hgga2s4)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=633, 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"]).

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 HgGa2S4 (Mercury gallium sulfide)

Mercury gallium sulfide (HgGa₂S₄) is a ternary compound notable for its non-linear optical properties. It is primarily used in optical applications, such as frequency conversion and phase matching in laser systems. The compound's non-linear optical coefficients make it suitable for second harmonic generation (SHG) and other non-linear processes. However, the presence of mercury in the compound necessitates careful handling due to toxicity risks. Research into this material often focuses on optimizing its non-linear characteristics and improving its thermal and mechanical stability for optical applications.

Other names: Mercury gallium sulfide, Mercury thiogallate, Mercury gallium sulphide

API: /v1/materials/mat_265f31653b61 · slug hgga2s4