GaS (Gallium sulfide)

Semiconductors and photonic platforms anisotropic

4 datasets, together covering 0.36–10.59 µm. Default: Kato and Umemura 2011: n(o) 0.633–10.6 µm.

Compare datasets

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

Datasets

Bulk

Multilayer flakes

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# GaS (Gallium sulfide): Kato and Umemura 2011: n(o) 0.633–10.6 µm
gas = ls.fetch_refractiveindex("main", "GaS", "Kato-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(gas.range_nm)  # (633, 10591) nm
eps = gas.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_47bcc324a037/lightsmith"
gas = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(gas.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (gas/kato-umemura-2011-o).

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

Gallium sulfide (GaS) is a binary compound with a layered structure, belonging to the family of III-VI semiconductors. It has an indirect band gap of approximately 3.0 eV and is not as commonly used as other III-V compounds like GaAs or GaN. However, GaS exhibits intriguing optoelectronic and nonlinear optical properties, making it a material of interest for specialized applications. It can be synthesized in both crystalline and thin-film forms, and it has been explored for use in photodetectors and photovoltaic cells. While not a mainstream material, GaS is the subject of ongoing research aimed at uncovering its full potential for optoelectronic applications.

Other names: Gallium sulfide, Gallium (II) sulfide

API: /v1/materials/mat_4eb166710ff6 · slug gas