As₂Se₃ (Arsenic triselenide)

Glasses, oxides and dielectrics

2 datasets, together covering 0.2458–1.688 µm. Default: Joseph et al. 2021: 400-nm film; n,k 0.246–1.69 µm.

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Datasets

Thin film

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# As2Se3 (Arsenic triselenide): Joseph et al. 2021: 400-nm film; n,k 0.246–1.69 µm
as2se3 = ls.fetch_refractiveindex("main", "As2Se3", "Joseph-400nm", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(as2se3.range_nm)  # (245.8, 1688) nm
eps = as2se3.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_aae3ed52bce0/lightsmith"
as2se3 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(as2se3.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (as2se3/joseph-2021-400nm).

# ... load as2se3 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=as2se3)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, 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 As2Se3 (Arsenic triselenide)

As₂Se₃, known as arsenic triselenide, is a chalcogenide material that can be found in both crystalline and amorphous forms. In optical and photonics research, the amorphous or glassy form is generally more relevant due to its ease of fabrication and advantageous optical properties. The material has a wide transmission window, extending from the near-infrared into the mid-infrared region, making it suitable for a variety of infrared applications, including imaging and sensing. It is particularly known for its high refractive index and large nonlinear optical coefficients, making it an attractive material for nonlinear optics and integrated photonics. Arsenic triselenide glass can be easily shaped into waveguides, fibers, or thin films, adding to its versatility. However, the material contains toxic arsenic and selenium elements, necessitating strict safety measures during fabrication and handling. Additionally, it is photosensitive, which can be an asset for direct laser writing techniques but requires attention to optical stability. Overall, As₂Se₃ is a compelling material in the realm of infrared optics and photonics, offering a unique blend of properties that continue to be explored in both academic and industrial research.

Other names: Arsenic triselenide, Arsenic(III) selenide, Diarsenic triselenide, Arsenic selenide

API: /v1/materials/mat_c4e99aa43e73 · slug as2se3