Ho (Holmium)

Metals and conductors

1 dataset, together covering 0.0009224–0.4133 µm. Default: Fernández-Perea et al. 2011: n,k 0.000922–0.413 µm.

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Datasets

Fernández-Perea et al. 2011: n,k 0.000922–0.413 µm n,k 0.0009224–0.4133 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# Ho (Holmium): Fernández-Perea et al. 2011: n,k 0.000922–0.413 µm
ho = ls.fetch_refractiveindex("main", "Ho", "Fernandez-Perea", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ho.range_nm)  # (0.922369, 413.281) nm
eps = ho.eps([19.5])  # 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_910a172165b6/lightsmith"
ho = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(ho.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (ho/fernandez-perea-2011).

# ... load ho as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=ho)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=1, stop_nm=413, 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 Ho (Holmium)

Holmium (Ho) is a rare-earth metal that belongs to the lanthanide series. It's not commonly used in its pure form but is often found in various complex compounds and crystal structures where it serves specific roles in optical applications. One of its key features is the numerous sharp and well-defined energy levels, which makes it an excellent choice for solid-state lasers. Holmium-doped materials are utilized in a variety of applications including medical and industrial lasers, particularly for cutting and ablation processes. The element is generally safe to handle but is often part of compounds that need specific care in handling and storage.

Other names: Holmium

API: /v1/materials/mat_3fe78e55d42d · slug ho