BeAl₂O₄ (Beryllium aluminate, chrysoberyl)

Glasses, oxides and dielectrics anisotropic

3 datasets, together covering 0.25–2.6 µm. Default: Walling et al. 1980: n(α) 0.25–2.6 µm.

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

Datasets

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# BeAl2O4 (Beryllium aluminate, chrysoberyl): Walling et al. 1980: n(α) 0.25–2.6 µm
beal2o4 = ls.fetch_refractiveindex("main", "BeAl2O4", "Walling-α", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(beal2o4.range_nm)  # (250, 2600) nm
eps = beal2o4.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_5fe3d92cd676/lightsmith"
beal2o4 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(beal2o4.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (beal2o4/walling-1980).

# ... load beal2o4 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=beal2o4)],
    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 BeAl2O4 (Beryllium aluminate, chrysoberyl)

BeAl₂O₄, commonly known as chrysoberyl, is a beryllium-aluminum oxide mineral that is noteworthy for its excellent hardness and durability. In the field of optics, chrysoberyl is used mainly as a gemstone and is not often encountered in technical applications due to its high cost and relative scarcity. However, its natural form, known as "cat's eye," is a unique gemstone admired for its chatoyancy. While not commonly utilized in high-technology optical applications, the properties of chrysoberyl, such as its excellent thermal stability and high hardness, could theoretically make it valuable in extreme environments where other materials may fail. The crystal structure of BeAl₂O₄ contributes to its remarkable hardness, which is second only to diamond among naturally occurring materials. Overall, while not a mainstream choice for technical optics, chrysoberyl remains an intriguing material whose unique characteristics could inspire future research and applications in specialized optical contexts. Mineral: Chrysoberyl

Other names: Beryllium aluminate, chrysoberyl, Beryllium aluminate, Beryllium aluminum oxide, Alexandrite, Chrysoberyl

API: /v1/materials/mat_0f1b1676dec6 · slug beal2o4