S-NBH8 (OHARA)

Glasses, oxides and dielectrics supplier-datasheet Supplier: OHARA

1 dataset, together covering 0.33–2.4 µm. Default: S-NBH8.

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Datasets

NBH (Niobate, high-index)

S-NBH8 n,k 0.33–2.4 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# S-NBH8 (OHARA): S-NBH8
ohara_s_nbh8 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-NBH8", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_nbh8.range_nm)  # (330, 2400) nm
eps = ohara_s_nbh8.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_c1d12b236390/lightsmith"
ohara_s_nbh8 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(ohara_s_nbh8.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (ohara-s-nbh8/ohara).

# ... load ohara_s_nbh8 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=ohara_s_nbh8)],
    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_c1d12b236390/lightsmith?model=drude_lorentz"
ohara_s_nbh8_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 S-NBH8 (OHARA)

Ohara Group is an international group of companies with headquarters in Japan and subsidiaries in Japan (Ohara, Inc.), United States (Ohara Corporation), and Germany (Ohara, GmbH). Ohara is known for its specialization in high-quality optical glass, ceramics, and other advanced materials. With a history spanning over a century, Ohara has been at the forefront of optical innovations, producing a wide range of specialized glass types including low-dispersion and high-refractive-index materials. These are used in various demanding applications like telescopes, microscopes, and high-performance camera lenses. The company's commitment to research and development has led to groundbreaking products such as low thermal expansion glass-ceramics and other specialty materials used in semiconductor manufacturing and space telescopes. With stringent quality control procedures, Ohara ensures that its optical glass meets the highest standards of clarity, consistency, and performance. Their materials are widely regarded for their exceptional quality and are often used in scientific research, aerospace, and other fields where precision and reliability are paramount. Ohara's reputation for technical excellence and innovation makes it a key player in the global optics and materials science industries, providing cutting-edge solutions for a range of complex applications.

Other names: S-NBH8

API: /v1/materials/mat_a2af4b7fd3c6 · slug ohara-s-nbh8