Al (Aluminium)
9 datasets, together covering 1.033e-05–1240 µm. Default: McPeak et al. 2015: n,k 0.15–1.7 µm.
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Datasets
Experimental data
Models and simulations
Use it in Lightsmith
Load this data in Python, simulate in one more line
pip install lightsmith
import lightsmith as ls
# Al (Aluminium): McPeak et al. 2015: n,k 0.15–1.7 µm
al = ls.LibraryMaterial(name="Al", dataset="McPeak")
print(al.range_nm) # (150, 1700) nm
eps = al.eps([633]) # complex permittivityShips with the library: works offline and is the library's own default dataset choice.
import lightsmith as ls
# Al (Aluminium): McPeak et al. 2015: n,k 0.15–1.7 µm
al = ls.fetch_refractiveindex("main", "Al", "McPeak", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(al.range_nm) # (150, 1700) nm
eps = al.eps([633]) # complex permittivityDownloads 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_d4a519d0ea25/lightsmith"
al = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(al.source) # citation and provenance travel with the dataAny dataset here, as the library's Tabulated material (al/mcpeak-2015).
# ... load al as above, then:
sim = ls.Simulation(
particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=al)],
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 wavelengthSame spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).
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 Al (Aluminium)
Aluminium (Al) is a lightweight and highly reflective metal that sees extensive use in a variety of optical applications. Known for its excellent thermal and electrical conductivity, aluminium is often utilized as a mirror coating in optical systems such as telescopes and microscopes, particularly for operations within the ultraviolet and visible spectral ranges. While it offers high reflectivity, it is also cost-effective, making it a popular choice across both consumer and industrial sectors. However, aluminium surfaces are generally more prone to oxidation than other reflective metals like gold or silver. To counteract this, aluminium coatings are frequently protected by a thin layer of dielectric material. In photonics, aluminium nanostructures are also being investigated for their plasmonic properties. It's worth noting that the optical properties of aluminium, such as its refractive index, can differ based on its physical state—whether in bulk, thin film, or nanoparticle form. Overall, aluminium remains a versatile and widely used material in the field of optics, valued for its blend of performance and affordability.
Other names: Aluminium, Aluminum, aluminium, aluminum
Also listed in
API: /v1/materials/mat_47347ad566f3 · slug al