KCl (Potassium chloride)

2 datasets, together covering 0.18–166.7 µm. Default: Li 1976: n 0.18–35 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

# KCl (Potassium chloride): Li 1976: n 0.18–35 µm
kcl = ls.fetch_refractiveindex("main", "KCl", "Li", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(kcl.range_nm)  # (180, 35000) nm
eps = kcl.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_4e9b682a8f89/lightsmith"
kcl = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(kcl.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (kcl/li-1976).

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

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_4e9b682a8f89/lightsmith?model=drude_lorentz"
kcl_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))

A dispersive Drude–Lorentz model for time-domain solvers.

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 KCl (Potassium chloride)

Potassium chloride (KCl) is a salt that finds use in various optical applications due to its wide spectral transmission range. Like its bromide counterpart, potassium chloride is hygroscopic, requiring cautious handling and storage conditions to preserve its optical qualities. It is commonly used as a prismatic or plane-parallel component in infrared spectroscopy, particularly because of its low cost and good transmission in the mid and far-infrared regions. Additionally, it serves as a substrate for specialized optical coatings. Due to its moisture sensitivity, it's less suitable for applications exposed to high humidity or varying environmental conditions. Nonetheless, KCl remains an important material in the toolkit of optical engineers and scientists.

Other names: Potassium chloride

Potassium chloride - Wikipedia

API: /v1/materials/mat_2ad4b74e7018 · slug kcl