QF50GTI (CDGM)

Glasses, oxides and dielectrics supplier-datasheet Supplier: CDGM

1 dataset, together covering 0.313–2.325 µm. Default: QF50GTI.

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Datasets

QF (Light flint)

QF50GTI n,k 0.313–2.325 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# QF50GTI (CDGM): QF50GTI
cdgm_qf50gti = ls.fetch_refractiveindex("specs", "CDGM-optical", "QF50GTI", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_qf50gti.range_nm)  # (313, 2325) nm
eps = cdgm_qf50gti.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_261256d22284/lightsmith"
cdgm_qf50gti = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(cdgm_qf50gti.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (cdgm-qf50gti/cdgm).

# ... load cdgm_qf50gti as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=cdgm_qf50gti)],
    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_261256d22284/lightsmith?model=drude_lorentz"
cdgm_qf50gti_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 QF50GTI (CDGM)

CDGM Glass Co., Ltd. is a leading manufacturer of optical glass based in China. The company offers a wide range of optical materials, including various types of crown and flint glasses, which are used in applications ranging from consumer electronics to advanced scientific instruments. Known for their capacity for large-scale production as well as their commitment to quality, CDGM has positioned itself as a major player in both domestic and international markets. Their optical glass products are often used in lenses, prisms, and other optical components that require high precision and reliability. With an extensive catalog that caters to different optical requirements, such as high refractive indices or low dispersion, CDGM serves a diverse clientele including manufacturers of microscopes, telescopes, cameras, and other high-precision optical equipment. The company's expertise in glass science and its ability to provide customized solutions have made it a go-to supplier for businesses seeking high-quality, reliable optical glass.

Other names: QF50GTI, CDGM Glass Co., Ltd.

API: /v1/materials/mat_49f277ce0c0b · slug cdgm-qf50gti