AgGaSe₂ (Silver gallium selenide, AGSe)

Semiconductors and photonic platforms anisotropic

6 datasets, together covering 0.725–18 µm. Default: Kato et al. 2021: n(o) 0.81–18 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

# AgGaSe2 (Silver gallium selenide, AGSe): Kato et al. 2021: n(o) 0.81–18 µm
aggase2 = ls.fetch_refractiveindex("main", "AgGaSe2", "Kato-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(aggase2.range_nm)  # (810, 18000) nm
eps = aggase2.eps([3820])  # 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_5b698a2ce4da/lightsmith"
aggase2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(aggase2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (aggase2/kato-2021-o).

# ... load aggase2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=aggase2)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=810, 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 AgGaSe2 (Silver gallium selenide, AGSe)

AgGaSe₂, often abbreviated as AGSe, is a ternary I-III-VI₂ chalcogenide compound known for its exceptional nonlinear optical properties. It crystallizes in a monoclinic structure and has a broad transparency range that extends from the visible to the mid-infrared regions of the electromagnetic spectrum. One of the standout features of AgGaSe₂ is its high nonlinear optical coefficient, which makes it especially useful in applications requiring frequency conversion, such as second-harmonic generation (SHG), sum-frequency generation (SFG), and parametric down-conversion. The compound is commonly employed in optical parametric oscillators (OPOs) and other tunable laser systems designed for mid-infrared applications. Its properties are highly anisotropic, which necessitates precise crystal orientation during device fabrication. While AGSe offers many advantages in terms of its optical characteristics, it is also sensitive to thermal and mechanical stresses, making careful handling and environmental control crucial for maintaining its performance. Overall, AgGaSe₂ is a pivotal material in the field of nonlinear optics, and it continues to be the focus of extensive research aimed at better understanding its properties and potential applications.

Other names: Silver gallium selenide, AGSe, Silver gallium selenide, AGSe

API: /v1/materials/mat_1765dbc1a9fd · slug aggase2