Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 2.53638
Extinction coefficient k: 0

Permittivity ε₁: 6.43322
Permittivity ε₂: 0

Absorption coefficient α: 0 cm⁻¹
Penetration depth δ = λ/(2πk): — nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.831949 µm⁻¹

Group index n_g: 3.02523
Group velocity dispersion: 2210.68 fs²/mm

Dispersion parameter D: -12060.4 ps/(nm·km)
Photon energy: 2.11001 eV

ε = (n + ik)², α = 4πk/λ, n_g = n − λ dn/dλ, GVD = λ³/(2πc²) d²n/dλ², D = −(λ/c) d²n/dλ². Group-velocity dispersion is given for formula data only.

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# AgGaS2-AgInS2: Kato et al. 2021: n(e) 0.565–10.6 µm
aggas2_agins2 = ls.fetch_refractiveindex("other", "AgGaS2-AgInS2", "Kato-e", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(aggas2_agins2.range_nm)  # (565, 10600) nm
eps = aggas2_agins2.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_5ee87aa9ad38/lightsmith"
aggas2_agins2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(aggas2_agins2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (aggas2-agins2/kato-2021-e).

# ... load aggas2_agins2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=aggas2_agins2)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=565, 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.

Dispersion formula

RefractiveIndex.INFO (formula 4), λ in µm

n^{2} = 10.62054 + \frac{0.22283 λ^{0.0}}{λ^{2} - {0.09609}^{1.0}} + \frac{10591.78 λ^{0.0}}{λ^{2} - {2084.7}^{1.0}}

Valid from 0.565 to 10.6 µm.

Coefficients as stored

C_i	Value
C1	10.62054
C2	0.22283
C3	0.0
C4	0.09609
C5	1.0
C6	10591.78
C7	0.0
C8	2084.7
C9	1.0

Comments and conditions

AgGa_0.86In_0.14S₂. Extraordinary ray (e). Room temperature.

Conditions

direction: e

References

K. Kato, S. Banerjee, N. Uemura. Phase-matching properties of AgGa_0.86In_0.14S₂ for three-wave interactions in the 0.615−10.5910 μm spectral range. Opt. Mater. Express, 11, 2800–2805 (2021)

doi:10.1364/ome.428688 Phase-matching properties of AgGa0.86In0.14S2 for three-wave interactions in the 0.615−10.5910 µm spectral range, Optical Materials Express (2021)

Cite

Kiyoshi Kato, Saumyabrata Banerjee and Nobuhiro Umemura. Phase-matching properties of AgGa0.86In0.14S2 for three-wave interactions in the 0.615−10.5910 µm spectral range. Optical Materials Express, 11, 2800 (2021), doi:10.1364/ome.428688; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 400 wavelengths, the same grid as the API and the library

CSV comma separated TXT tab separated YAML n, k Full database record original YAML All quantities CSV JSON metadata

AgGaS2-AgInS2, Kato et al. 2021: n(e) 0.565–10.6 µm: n and k versus wavelength
λ (µm)	n
0.565	2.556887
0.569167	2.552832
0.573364	2.548878
0.577593	2.545023
0.581853	2.541264
0.586144	2.537597
0.590466	2.534019
0.594821	2.530528
0.599208	2.52712
0.603627	2.523793
0.608079	2.520545
0.612563	2.517373
0.617081	2.514275
0.621632	2.511248
0.626216	2.508291
0.630834	2.505401
0.635487	2.502576
0.640173	2.499815
0.644894	2.497116
0.64965	2.494476
0.654442	2.491894
0.659268	2.489369
0.66413	2.486899
0.669028	2.484482
0.673962	2.482118
0.678932	2.479803
0.683939	2.477538
0.688983	2.475321
0.694065	2.47315
0.699183	2.471024
0.70434	2.468943
0.709534	2.466904
0.714767	2.464908
0.720038	2.462952
0.725348	2.461036
0.730698	2.459158
0.736086	2.457319
0.741515	2.455516
0.746984	2.453749
0.752493	2.452017
0.758042	2.450319
0.763633	2.448655
0.769264	2.447023
0.774937	2.445423
0.780653	2.443854
0.78641	2.442315
0.792209	2.440805
0.798052	2.439325
0.803937	2.437873
0.809866	2.436448
0.815839	2.43505
0.821856	2.433678
0.827917	2.432332
0.834023	2.431011
0.840174	2.429714
0.84637	2.428442
0.852612	2.427193
0.8589	2.425967
0.865234	2.424763
0.871615	2.423581
0.878043	2.422421
0.884518	2.421281
0.891042	2.420162
0.897613	2.419063
0.904233	2.417984
0.910901	2.416924
0.917619	2.415883
0.924386	2.41486
0.931204	2.413856
0.938071	2.412869
0.944989	2.411899
0.951959	2.410946
0.958979	2.41001
0.966052	2.40909
0.973176	2.408186
0.980353	2.407298
0.987583	2.406424
0.994866	2.405566
1.0022	2.404722
1.00959	2.403893
1.01704	2.403078
1.02454	2.402277
1.0321	2.401489
1.03971	2.400714
1.04738	2.399952
1.0551	2.399204
1.06288	2.398467
1.07072	2.397743
1.07862	2.397031
1.08657	2.39633
1.09458	2.395641
1.10266	2.394964
1.11079	2.394297
1.11898	2.393642
1.12723	2.392997
1.13555	2.392362
1.14392	2.391738
1.15236	2.391124
1.16086	2.390519
1.16942	2.389925
1.17804	2.38934
1.18673	2.388764
1.19548	2.388197
1.2043	2.38764
1.21318	2.387091
1.22213	2.386551
1.23114	2.386019
1.24022	2.385496
1.24937	2.384981
1.25858	2.384473
1.26786	2.383974
1.27721	2.383483
1.28663	2.382999
1.29612	2.382522
1.30568	2.382053
1.31531	2.381591
1.32501	2.381136
1.33478	2.380688
1.34462	2.380246
1.35454	2.379811
1.36453	2.379383
1.37459	2.378962
1.38473	2.378546
1.39494	2.378137
1.40523	2.377734
1.41559	2.377336
1.42603	2.376945
1.43655	2.376559
1.44714	2.376179
1.45782	2.375805
1.46857	2.375436
1.4794	2.375072
1.49031	2.374714
1.5013	2.37436
1.51237	2.374012
1.52353	2.373668
1.53476	2.37333
1.54608	2.372996
1.55748	2.372667
1.56897	2.372343
1.58054	2.372023
1.5922	2.371707
1.60394	2.371396
1.61577	2.371089
1.62768	2.370786
1.63969	2.370487
1.65178	2.370193
1.66396	2.369902
1.67623	2.369615
1.6886	2.369332
1.70105	2.369053
1.71359	2.368777
1.72623	2.368505
1.73896	2.368236
1.75179	2.367971
1.76471	2.36771
1.77772	2.367451
1.79083	2.367196
1.80404	2.366944
1.81734	2.366695
1.83075	2.36645
1.84425	2.366207
1.85785	2.365967
1.87155	2.36573
1.88535	2.365496
1.89926	2.365265
1.91326	2.365036
1.92737	2.36481
1.94159	2.364587
1.95591	2.364366
1.97033	2.364148
1.98486	2.363932
1.9995	2.363718
2.01425	2.363507
2.0291	2.363298
2.04406	2.363092
2.05914	2.362887
2.07433	2.362685
2.08962	2.362485
2.10503	2.362287
2.12056	2.36209
2.1362	2.361896
2.15195	2.361704
2.16782	2.361513
2.18381	2.361325
2.19991	2.361138
2.21614	2.360953
2.23248	2.360769
2.24895	2.360587
2.26553	2.360407
2.28224	2.360228
2.29907	2.360051
2.31603	2.359875
2.33311	2.359701
2.35031	2.359528
2.36765	2.359357
2.38511	2.359186
2.4027	2.359017
2.42042	2.358849
2.43827	2.358683
2.45625	2.358517
2.47437	2.358353
2.49261	2.35819
2.511	2.358027
2.52951	2.357866
2.54817	2.357706
2.56696	2.357547
2.58589	2.357388
2.60496	2.357231
2.62418	2.357074
2.64353	2.356918
2.66302	2.356762
2.68266	2.356608
2.70245	2.356454
2.72238	2.356301
2.74246	2.356148
2.76268	2.355996
2.78305	2.355844
2.80358	2.355693
2.82426	2.355543
2.84508	2.355392
2.86607	2.355243
2.8872	2.355093
2.9085	2.354944
2.92995	2.354795
2.95155	2.354647
2.97332	2.354498
2.99525	2.35435
3.01734	2.354202
3.03959	2.354055
3.06201	2.353907
3.08459	2.353759
3.10734	2.353611
3.13026	2.353464
3.15334	2.353316
3.1766	2.353168
3.20002	2.35302
3.22362	2.352872
3.2474	2.352724
3.27135	2.352576
3.29547	2.352427
3.31978	2.352278
3.34426	2.352129
3.36892	2.351979
3.39377	2.351829
3.4188	2.351679
3.44401	2.351528
3.46941	2.351377
3.49499	2.351225
3.52077	2.351073
3.54674	2.35092
3.57289	2.350767
3.59924	2.350612
3.62579	2.350458
3.65253	2.350302
3.67946	2.350146
3.7066	2.349988
3.73393	2.349831
3.76147	2.349672
3.78921	2.349512
3.81716	2.349351
3.84531	2.34919
3.87367	2.349027
3.90223	2.348864
3.93101	2.348699
3.96	2.348533
3.98921	2.348366
4.01863	2.348198
4.04827	2.348029
4.07812	2.347858
4.1082	2.347686
4.13849	2.347513
4.16901	2.347338
4.19976	2.347162
4.23073	2.346984
4.26193	2.346805
4.29337	2.346624
4.32503	2.346442
4.35693	2.346258
4.38906	2.346073
4.42143	2.345885
4.45403	2.345696
4.48688	2.345506
4.51997	2.345313
4.55331	2.345118
4.58689	2.344922
4.62071	2.344723
4.65479	2.344523
4.68912	2.34432
4.7237	2.344116
4.75854	2.343909
4.79363	2.3437
4.82899	2.343489
4.8646	2.343275
4.90047	2.343059
4.93661	2.342841
4.97302	2.34262
5.0097	2.342396
5.04664	2.34217
5.08386	2.341942
5.12135	2.341711
5.15912	2.341477
5.19717	2.34124
5.2355	2.341
5.27411	2.340758
5.31301	2.340513
5.35219	2.340264
5.39166	2.340013
5.43143	2.339758
5.47148	2.3395
5.51183	2.339239
5.55248	2.338975
5.59343	2.338707
5.63468	2.338436
5.67624	2.338161
5.7181	2.337883
5.76027	2.337601
5.80275	2.337316
5.84555	2.337026
5.88866	2.336733
5.93208	2.336436
5.97583	2.336135
6.0199	2.33583
6.0643	2.335521
6.10902	2.335207
6.15408	2.334889
6.19946	2.334567
6.24518	2.334241
6.29124	2.33391
6.33764	2.333574
6.38438	2.333233
6.43146	2.332888
6.47889	2.332538
6.52667	2.332183
6.57481	2.331823
6.6233	2.331458
6.67214	2.331088
6.72135	2.330713
6.77092	2.330332
6.82085	2.329945
6.87115	2.329553
6.92183	2.329155
6.97288	2.328752
7.0243	2.328342
7.0761	2.327927
7.12829	2.327505
7.18086	2.327078
7.23382	2.326643
7.28717	2.326203
7.34091	2.325756
7.39505	2.325302
7.44958	2.324842
7.50452	2.324374
7.55987	2.3239
7.61562	2.323418
7.67179	2.32293
7.72837	2.322433
7.78536	2.32193
7.84278	2.321418
7.90062	2.320899
7.95888	2.320372
8.01758	2.319837
8.07671	2.319293
8.13627	2.318741
8.19628	2.318181
8.25672	2.317612
8.31762	2.317034
8.37896	2.316447
8.44075	2.315852
8.503	2.315246
8.56571	2.314632
8.62888	2.314007
8.69252	2.313373
8.75662	2.312729
8.8212	2.312075
8.88626	2.31141
8.95179	2.310735
9.01781	2.310049
9.08432	2.309352
9.15131	2.308644
9.2188	2.307925
9.28679	2.307194
9.35528	2.306451
9.42427	2.305697
9.49378	2.30493
9.56379	2.304151
9.63432	2.303359
9.70538	2.302555
9.77695	2.301737
9.84906	2.300906
9.92169	2.300061
9.99486	2.299203
10.0686	2.29833
10.1428	2.297443
10.2176	2.296542
10.293	2.295625
10.3689	2.294693
10.4454	2.293746
10.5224	2.292783
10.6	2.291804

Optical transmission calculator

Free-standing sample in vacuum, normal incidence

Transmittance T: —
Reflectance R: —

Fresnel reflection calculator

R_p: —
R_s: —
R = (R_p+R_s)/2: —
Phase φ_p: —
Phase φ_s: —
Brewster angle θ_B: —
Critical angle θ_C: —

Plot