O₂ (Oxygen)

2 datasets, together covering 0.1843–1.8 µm. Default: Smith et al. 1976: n 0.168–0.289 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

# O2 (Oxygen): Smith et al. 1976: n 0.168–0.289 µm
o2 = ls.fetch_refractiveindex("main", "O2", "Smith", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(o2.range_nm)  # (184.3, 288.24) nm
eps = o2.eps([230])  # 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_e25afc28c8b5/lightsmith"
o2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(o2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (o2/smith-1976).

# ... load o2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=o2)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=185, stop_nm=288, 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 O2 (Oxygen)

Oxygen (O₂) is a diatomic molecule that constitutes about 20.8% of Earth's atmosphere. It is essential for the respiration of most life forms and is a key player in combustion processes. In its liquid and solid states, oxygen is pale blue. Optically, oxygen is generally transparent in the visible region, but it can have strong absorption bands in the ultraviolet and infrared wavelengths. This absorption is vital for protecting life on Earth by filtering out the sun's harmful ultraviolet radiation in the upper atmosphere. In advanced optical applications, oxygen plays a role in the formation of certain oxide materials used in optics, like optical fibers and waveguides. Additionally, pure oxygen environments are sometimes used in various laser processes due to its reactive nature.

Other names: Oxygen

API: /v1/materials/mat_fe73c2164edd · slug o2