LiTaO₃ (Lithium tantalate)

Semiconductors and photonic platforms integrated-photonicsanisotropic

2 datasets, together covering 0.45–4 µm. Default: Bond et al. 1965: n(o) 0.45–4.0 µm.

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Datasets

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# LiTaO3 (Lithium tantalate): Bond et al. 1965: n(o) 0.45–4.0 µm
litao3 = ls.fetch_refractiveindex("main", "LiTaO3", "Bond-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(litao3.range_nm)  # (450, 4000) nm
eps = litao3.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_d14c41ccc23c/lightsmith"
litao3 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(litao3.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (litao3/bond-1965-o).

# ... load litao3 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=litao3)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=450, 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 LiTaO3 (Lithium tantalate)

Lithium Tantalate (LiTaO₃) is a crystalline compound known for its unique electro-optical, piezoelectric, and pyroelectric properties. As a result of these characteristics, LiTaO₃ has become highly sought after in various applications. It is often used in non-linear optics for frequency doubling of lasers, and its acoustic properties make it an attractive material for surface acoustic wave (SAW) devices. Moreover, LiTaO₃ is widely used in the fabrication of acoustic wave filters in telecommunications. The crystal can also serve as a substrate for the growth of other materials in research and fabrication applications. One of the standout properties of LiTaO₃ is its ability to modulate light, making it a key player in modern electro-optical modulators. While handling, it is important to be aware of the potential hazards associated with lithium compounds; thus, proper safety protocols should be followed. Optically, the crystal's refractive properties are essential for numerous photonics applications.

Other names: Lithium tantalate, LT, thin-film lithium tantalate

API: /v1/materials/mat_ec21b0a9dd5b · slug litao3