As₂S₃ (Arsenic trisulfide)

Glasses, oxides and dielectrics anisotropic

8 datasets, together covering 0.1301–33 µm. Default: Slavich et al. 2024: n(α) 0.500–0.900 µm.

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

Datasets

Experimental data - crystal

Experimental data - glass

Rodney et al. 1958: n 0.57–11.8 µm n 0.57–11.8 µm

Models and simulations - crystal

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# As2S3 (Arsenic trisulfide): Slavich et al. 2024: n(α) 0.500–0.900 µm
as2s3 = ls.fetch_refractiveindex("main", "As2S3", "Slavich-alpha", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(as2s3.range_nm)  # (500, 900) nm
eps = as2s3.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_2f2545287f27/lightsmith"
as2s3 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(as2s3.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (as2s3/slavich-2024-alpha).

# ... load as2s3 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=as2s3)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=500, stop_nm=900, 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 As2S3 (Arsenic trisulfide)

As₂S₃, also known as arsenic trisulfide, exists in both crystalline and amorphous forms. The crystalline form is commonly referred to as orpiment and occurs naturally as a mineral. However, in optical and photonic applications, the amorphous or glassy form of As₂S₃ is often preferred. This chalcogenide glass features a broad transmission window that extends from the visible to the mid-infrared spectral regions, and it is known for its high nonlinear optical coefficients. The amorphous structure allows for the material to be easily molded, drawn into fibers, or deposited as thin films, making it highly versatile for a variety of optoelectronic applications. It also offers the advantage of strong light confinement due to its high refractive index. However, users should exercise caution as the material contains toxic arsenic, and its photosensitive nature necessitates consideration for stability under light exposure. Whether in its crystalline or amorphous state, As₂S₃ remains a material of significant interest for both its unique optical properties and its potential in emerging technologies. Mineral: Orpiment

Other names: Arsenic trisulfide, Arsenic(III) sulfide, Diarsenic trisulfide, Arsenic trisulphide, Arsenic(III) sulphide, Diarsenic trisulphide, Orpiment

API: /v1/materials/mat_da7587847000 · slug as2s3