K-BPG2 (SUMITA)

Glasses, oxides and dielectrics supplier-datasheet Supplier: SUMITA

1 dataset, together covering 0.36–1.55 µm. Default: K-BPG2.

Compare datasets

Tick datasets in the list to add them to the plot (up to 12).

Datasets

BPG

K-BPG2 n,k 0.36–1.55 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# K-BPG2 (SUMITA): K-BPG2
sumita_k_bpg2 = ls.fetch_refractiveindex("specs", "SUMITA-optical", "K-BPG2", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(sumita_k_bpg2.range_nm)  # (360, 1550) nm
eps = sumita_k_bpg2.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_9a015e7ae41d/lightsmith"
sumita_k_bpg2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(sumita_k_bpg2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (sumita-k-bpg2/sumita).

# ... load sumita_k_bpg2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=sumita_k_bpg2)],
    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 K-BPG2 (SUMITA)

SUMITA Optical Glass, Inc. is a Japanese corporation known for its specialization in the production and development of optical glass, optical fiber, and various other photonic products. Founded in 1953, the company has established itself as a leading provider of high-quality optical materials that are used in a wide range of applications—from industrial and scientific optics to consumer electronics and medical devices. SUMITA's portfolio includes a variety of specialized optical glasses, including high-refractive-index, low-dispersion, and infrared-transmitting materials. These are often utilized in lenses, prisms, and other optical components requiring precision and high performance. With a strong commitment to research and development, SUMITA continually innovates to meet the evolving demands of the optics industry. Their rigorous quality control processes ensure that products meet the highest standards for optical clarity, consistency, and reliability. SUMITA Optical Glass, Inc. has garnered a reputation for excellence and innovation, making it a preferred supplier for organizations in need of advanced optical solutions.

Other names: K-BPG2

SUMITA Optical Glass

API: /v1/materials/mat_6041398be290 · slug sumita-k-bpg2