AgGaS₂ (Silver gallium sulfide, AGS)

Semiconductors and photonic platforms anisotropic

6 datasets, together covering 0.49–12.9 µm. Default: Takaoka and Kato 1999: n(o) 0.58–10.59 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

# AgGaS2 (Silver gallium sulfide, AGS): Takaoka and Kato 1999: n(o) 0.58–10.59 µm
aggas2 = ls.fetch_refractiveindex("main", "AgGaS2", "Takaoka-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(aggas2.range_nm)  # (580, 10590) nm
eps = aggas2.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_b805fa80fe42/lightsmith"
aggas2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(aggas2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (aggas2/takaoka-kato-1999-o).

# ... load aggas2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=aggas2)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=580, 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"]).

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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 AgGaS2 (Silver gallium sulfide, AGS)

AgGaS₂, commonly abbreviated as AGS, is a ternary chalcogenide compound that has gained considerable attention for its nonlinear optical properties. This material crystallizes in a tetragonal structure and possesses a wide transparency range, extending from the visible to the mid-infrared spectrum. AGS is particularly renowned for its high nonlinear optical coefficients, which make it an attractive material for frequency conversion processes like second-harmonic generation (SHG) and difference-frequency generation (DFG). Due to these attributes, AGS has been utilized in a range of optoelectronic applications, including optical parametric oscillators and tunable infrared lasers. Its nonlinear optical performance is highly anisotropic, meaning that the material's properties can vary depending on the crystallographic orientation, a factor that must be considered in device design and fabrication. Like many chalcogenides, AGS is sensitive to thermal and mechanical stress, requiring careful handling and environmental control. Overall, AgGaS₂ serves as a critical material in the realm of nonlinear optics, offering a unique combination of wide transparency and high nonlinear coefficients that continue to make it a subject of ongoing research and technological development.

Other names: Silver gallium sulfide, AGS, Silver gallium sulfide, AGS

API: /v1/materials/mat_652105f2f945 · slug aggas2