Se (Selenium)

Semiconductors and photonic platforms anisotropic

3 datasets, together covering 0.2–10.6 µm. Default: Campel and Johnson 1969: n(o) 1.06–10.6 µm.

Compare datasets

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

Datasets

Bulk

Thin film

Ciesielski et al. 2018: 25-nm film; n,k 0.2–2 µm n,k 0.2–2 µm

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# Se (Selenium): Campel and Johnson 1969: n(o) 1.06–10.6 µm
se = ls.fetch_refractiveindex("main", "Se", "Campel-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(se.range_nm)  # (1060, 10600) nm
eps = se.eps([3350])  # 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_5c7881d66617/lightsmith"
se = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(se.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (se/campel-johnson-1969-o).

# ... load se as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=se)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=1060, stop_nm=10600, 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 Se (Selenium)

Selenium (Se) is a non-metal with a gray or black appearance, and it's an essential trace element for many organisms. Resembling sulfur both in its appearance and in its ability to form polymers, selenium has a range of allotropes. It is primarily used in the electronics industry for photovoltaic cells and as a photosensitive material in xerography. Selenium also finds applications in the glass industry to decolorize glass and make red and yellow pigments. Additionally, it's utilized in metallurgy to refine certain metals. In the realm of optics, selenium is known for its photoconductive properties. It should be handled with care, as excessive exposure can lead to selenium poisoning, which has symptoms similar to arsenic poisoning.

Other names: Selenium

API: /v1/materials/mat_28ef6d6953fa · slug se