Li (Lithium)

5 datasets, together covering 0.1153–8.266 µm. Default: Mathewson and Myers 1971: n,k 0.326–1.77 µm; 298 K.

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

# Li (Lithium): Mathewson and Myers 1971: n,k 0.326–1.77 µm; 298 K
li = ls.fetch_refractiveindex("main", "Li", "Mathewson-298K", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(li.range_nm)  # (326.27, 1771.2) nm
eps = li.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_c51fe5186d39/lightsmith"
li = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(li.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (li/mathewson-myers-1971-298k).

# ... load li as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=li)],
    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 Li (Lithium)

Lithium (Li) is a soft, silvery-white alkali metal that is the lightest metal and the lightest solid element. It is highly reactive and flammable, requiring special handling and storage procedures. In the context of optics and photonics, lithium is used as a component in various optical materials like lithium niobate (LiNbO₃) and lithium tantalate (LiTaO₃), which are commonly used for nonlinear optics, modulators, and other optical devices due to their high electro-optic coefficients. Additionally, lithium is used in the manufacturing of specialty glasses and ceramics, contributing to their desirable optical properties. Although lithium itself is not used in optical applications, its compounds are highly valuable in the field.

Other names: Lithium

API: /v1/materials/mat_d6442ccfe49a · slug li