Be (Beryllium)

3 datasets, together covering 0.004959–61.99 µm. Default: Rakić et al. 1998: Brendel-Bormann model; n,k 0.248–62.0 µm.

Compare datasets

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

# Be (Beryllium): Rakić et al. 1998: Brendel-Bormann model; n,k 0.248–62.0 µm
be = ls.fetch_refractiveindex("main", "Be", "Rakic-BB", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(be.range_nm)  # (247.97, 61992) nm
eps = be.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_5ea2cda57f7d/lightsmith"
be = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(be.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (be/rakic-1998-bb).

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

Beryllium (Be) is a lightweight metal with exceptional stiffness and thermal stability, making it a material of interest for a range of high-performance applications. In the field of optics, beryllium is often used for the fabrication of mirrors, particularly for X-ray and infrared applications where its low atomic number and high thermal conductivity are advantageous. Its low density also makes it desirable for aerospace and satellite applications where weight is a critical factor. Despite these advantages, beryllium is challenging to work with due to its toxicity, and it requires special safety precautions during fabrication and handling. Additionally, the material is prone to oxidation, which can be mitigated through coatings or by operating in controlled environments. Although it is not traditionally used in bulk optics due to its metallic nature and the associated high absorption, its unique combination of low density, high stiffness, and thermal stability make beryllium an important material for specialized optical applications.

Other names: Beryllium

API: /v1/materials/mat_5294e1e023f6 · slug be