Optical constants

Refractive index of ZnTe (Zinc telluride)

Li 1984: n 0.55–30 µm;

Data: formula 4
Range: 0.55–30 µm
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 3.06311
Extinction coefficient k: 0

Permittivity ε₁: 9.38264
Permittivity ε₂: 0

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

Abbe number V_d: —
Chromatic dispersion dn/dλ: -1.98687 µm⁻¹

Group index n_g: 4.2306
Group velocity dispersion: 6600.85 fs²/mm

Dispersion parameter D: -36011.1 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

# ZnTe (Zinc telluride): Li 1984: n 0.55–30 µm
znte = ls.fetch_refractiveindex("main", "ZnTe", "Li", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(znte.range_nm)  # (550, 30000) nm
eps = znte.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_06d8d6d079d6/lightsmith"
znte = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(znte.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (znte/li-1984).

# ... load znte as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=znte)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=550, 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} = 9.92 + \frac{0.4253 λ^{0.0}}{λ^{2} - {0.37766}^{2.0}} + \frac{8414.13 λ^{0.0}}{λ^{2} - {56.5}^{2.0}}

Valid from 0.55 to 30.0 µm.

Coefficients as stored

C_i	Value
C1	9.92
C2	0.4253
C3	0.0
C4	0.37766
C5	2.0
C6	8414.13
C7	0.0
C8	56.5
C9	2.0

Comments and conditions

293 K (20 °C).

References

H. H. Li. Refractive index of ZnS, ZnSe, and ZnTe and its wavelength and temperature derivatives. J. Phys. Chem. Ref. Data 13, 103-150 (1984)
*Sellmeier formula is derived by critical analysis of experimental data from several sources.

doi:10.1063/1.555705 Refractive Index of ZnS, ZnSe, and ZnTe and Its Wavelength and Temperature Derivatives, Journal of Physical and Chemical Reference Data (1984)

Cite

H. H. Li. Refractive Index of ZnS, ZnSe, and ZnTe and Its Wavelength and Temperature Derivatives. Journal of Physical and Chemical Reference Data, 13, 103-150 (1984), doi:10.1063/1.555705; 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

ZnTe (Zinc telluride), Li 1984: n 0.55–30 µm: n and k versus wavelength
λ (µm)	n
0.55	3.153441
0.55554	3.137838
0.561136	3.122991
0.566788	3.108849
0.572498	3.095364
0.578265	3.082494
0.584089	3.0702
0.589973	3.058446
0.595916	3.0472
0.601919	3.03643
0.607982	3.02611
0.614106	3.016213
0.620292	3.006716
0.62654	2.997597
0.632851	2.988834
0.639226	2.980409
0.645665	2.972305
0.652169	2.964505
0.658738	2.956993
0.665373	2.949755
0.672076	2.942778
0.678846	2.936049
0.685684	2.929556
0.692591	2.923289
0.699567	2.917236
0.706614	2.911389
0.713732	2.905738
0.720921	2.900274
0.728183	2.894989
0.735518	2.889876
0.742927	2.884927
0.75041	2.880135
0.757969	2.875494
0.765604	2.870998
0.773316	2.866641
0.781106	2.862417
0.788974	2.858321
0.796921	2.854349
0.804949	2.850494
0.813057	2.846754
0.821247	2.843123
0.82952	2.839598
0.837875	2.836175
0.846315	2.83285
0.85484	2.829619
0.863451	2.826479
0.872149	2.823427
0.880934	2.82046
0.889807	2.817575
0.898771	2.814769
0.907824	2.81204
0.916968	2.809384
0.926205	2.8068
0.935535	2.804285
0.944958	2.801837
0.954477	2.799453
0.964092	2.797132
0.973803	2.794871
0.983612	2.792669
0.99352	2.790524
1.00353	2.788434
1.01364	2.786397
1.02385	2.784412
1.03416	2.782477
1.04458	2.780591
1.0551	2.778752
1.06573	2.776958
1.07646	2.775209
1.08731	2.773503
1.09826	2.771839
1.10932	2.770216
1.1205	2.768632
1.13178	2.767087
1.14318	2.765578
1.1547	2.764106
1.16633	2.76267
1.17808	2.761267
1.18994	2.759898
1.20193	2.758561
1.21404	2.757255
1.22627	2.75598
1.23862	2.754735
1.2511	2.753519
1.2637	2.752331
1.27643	2.75117
1.28928	2.750036
1.30227	2.748928
1.31539	2.747846
1.32864	2.746788
1.34202	2.745754
1.35554	2.744744
1.3692	2.743756
1.38299	2.74279
1.39692	2.741847
1.41099	2.740924
1.4252	2.740022
1.43956	2.73914
1.45406	2.738277
1.46871	2.737433
1.4835	2.736608
1.49844	2.735801
1.51354	2.735012
1.52878	2.73424
1.54418	2.733485
1.55974	2.732746
1.57545	2.732023
1.59132	2.731315
1.60735	2.730623
1.62354	2.729946
1.63989	2.729283
1.65641	2.728634
1.6731	2.727999
1.68995	2.727377
1.70697	2.726769
1.72417	2.726173
1.74153	2.72559
1.75908	2.725019
1.7768	2.72446
1.79469	2.723912
1.81277	2.723376
1.83103	2.722851
1.84948	2.722337
1.86811	2.721834
1.88692	2.72134
1.90593	2.720857
1.92513	2.720383
1.94452	2.71992
1.96411	2.719465
1.98389	2.71902
2.00388	2.718583
2.02406	2.718156
2.04445	2.717736
2.06504	2.717326
2.08585	2.716923
2.10686	2.716528
2.12808	2.716141
2.14952	2.715761
2.17117	2.715389
2.19304	2.715024
2.21513	2.714666
2.23744	2.714315
2.25998	2.713971
2.28274	2.713633
2.30574	2.713302
2.32896	2.712977
2.35242	2.712657
2.37612	2.712344
2.40005	2.712037
2.42423	2.711735
2.44865	2.711439
2.47332	2.711148
2.49823	2.710863
2.52339	2.710582
2.54881	2.710307
2.57449	2.710036
2.60042	2.70977
2.62661	2.709509
2.65307	2.709252
2.6798	2.709
2.70679	2.708752
2.73405	2.708508
2.7616	2.708268
2.78941	2.708033
2.81751	2.707801
2.84589	2.707573
2.87456	2.707348
2.90351	2.707127
2.93276	2.70691
2.9623	2.706696
2.99214	2.706485
3.02228	2.706277
3.05273	2.706073
3.08348	2.705871
3.11454	2.705673
3.14591	2.705477
3.1776	2.705284
3.20961	2.705094
3.24194	2.704906
3.27459	2.704721
3.30758	2.704538
3.34089	2.704358
3.37455	2.704179
3.40854	2.704003
3.44287	2.70383
3.47755	2.703658
3.51258	2.703488
3.54797	2.70332
3.5837	2.703154
3.6198	2.70299
3.65627	2.702827
3.6931	2.702666
3.7303	2.702506
3.76787	2.702349
3.80583	2.702192
3.84416	2.702037
3.88288	2.701883
3.922	2.70173
3.9615	2.701579
4.00141	2.701428
4.04171	2.701279
4.08243	2.701131
4.12355	2.700983
4.16509	2.700836
4.20704	2.700691
4.24942	2.700546
4.29222	2.700401
4.33546	2.700257
4.37913	2.700114
4.42324	2.699971
4.4678	2.699829
4.5128	2.699687
4.55826	2.699545
4.60417	2.699403
4.65055	2.699262
4.6974	2.699121
4.74471	2.69898
4.79251	2.698839
4.84078	2.698698
4.88954	2.698557
4.9388	2.698415
4.98855	2.698274
5.0388	2.698132
5.08955	2.697989
5.14082	2.697847
5.1926	2.697704
5.24491	2.69756
5.29774	2.697416
5.3511	2.697271
5.40501	2.697125
5.45945	2.696979
5.51444	2.696832
5.56999	2.696684
5.6261	2.696535
5.68277	2.696385
5.74001	2.696234
5.79783	2.696082
5.85623	2.695928
5.91522	2.695773
5.97481	2.695617
6.03499	2.69546
6.09578	2.695301
6.15719	2.695141
6.21921	2.694979
6.28185	2.694815
6.34513	2.694649
6.40905	2.694482
6.4736	2.694313
6.53881	2.694142
6.60468	2.693968
6.67121	2.693793
6.73841	2.693616
6.80628	2.693436
6.87484	2.693254
6.94409	2.693069
7.01404	2.692882
7.0847	2.692692
7.15606	2.6925
7.22814	2.692305
7.30095	2.692107
7.37449	2.691906
7.44878	2.691703
7.52381	2.691496
7.5996	2.691286
7.67615	2.691072
7.75347	2.690855
7.83157	2.690635
7.91046	2.690411
7.99014	2.690184
8.07063	2.689952
8.15192	2.689717
8.23404	2.689478
8.31698	2.689235
8.40076	2.688987
8.48538	2.688735
8.57085	2.688479
8.65719	2.688218
8.74439	2.687952
8.83247	2.687682
8.92144	2.687407
9.01131	2.687126
9.10208	2.686841
9.19377	2.68655
9.28637	2.686254
9.37992	2.685952
9.4744	2.685644
9.56984	2.685331
9.66623	2.685011
9.7636	2.684685
9.86195	2.684353
9.96129	2.684015
10.0616	2.683669
10.163	2.683317
10.2654	2.682958
10.3688	2.682592
10.4732	2.682218
10.5787	2.681837
10.6853	2.681448
10.7929	2.681051
10.9016	2.680646
11.0114	2.680232
11.1223	2.67981
11.2344	2.679379
11.3475	2.67894
11.4618	2.678491
11.5773	2.678032
11.6939	2.677564
11.8117	2.677086
11.9307	2.676598
12.0509	2.676099
12.1723	2.67559
12.2949	2.67507
12.4187	2.674538
12.5438	2.673995
12.6702	2.67344
12.7978	2.672873
12.9267	2.672294
13.0569	2.671702
13.1884	2.671096
13.3213	2.670478
13.4555	2.669845
13.591	2.669198
13.7279	2.668537
13.8662	2.667861
14.0059	2.66717
14.147	2.666463
14.2895	2.66574
14.4334	2.665
14.5788	2.664243
14.7256	2.663469
14.874	2.662677
15.0238	2.661867
15.1751	2.661038
15.328	2.660189
15.4824	2.659321
15.6383	2.658432
15.7959	2.657522
15.955	2.65659
16.1157	2.655636
16.278	2.654659
16.442	2.653659
16.6076	2.652635
16.7749	2.651585
16.9439	2.650511
17.1146	2.649409
17.287	2.648281
17.4611	2.647125
17.637	2.64594
17.8146	2.644726
17.9941	2.643481
18.1753	2.642205
18.3584	2.640896
18.5433	2.639554
18.7301	2.638178
18.9188	2.636767
19.1094	2.635319
19.3019	2.633833
19.4963	2.632309
19.6927	2.630745
19.891	2.629139
20.0914	2.627491
20.2938	2.625798
20.4982	2.62406
20.7047	2.622276
20.9132	2.620442
21.1239	2.618558
21.3367	2.616623
21.5516	2.614633
21.7687	2.612588
21.988	2.610486
22.2095	2.608324
22.4332	2.6061
22.6591	2.603812
22.8874	2.601458
23.1179	2.599035
23.3508	2.596541
23.586	2.593973
23.8236	2.591329
24.0636	2.588604
24.306	2.585797
24.5508	2.582903
24.7981	2.57992
25.0479	2.576844
25.3002	2.573672
25.5551	2.570398
25.8125	2.567019
26.0725	2.56353
26.3351	2.559927
26.6004	2.556205
26.8683	2.552358
27.139	2.548381
27.4123	2.544268
27.6885	2.540013
27.9674	2.535609
28.2491	2.531049
28.5337	2.526325
28.8211	2.521431
29.1114	2.516356
29.4046	2.511092
29.7008	2.505629
30	2.499957

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: —

ZnTe (Zinc telluride): all datasets

Experimental data

Models and simulations

Sato and Adachi 1993: n,k 0.221–0.827 µm n,k 0.2214–0.8266 µm

About ZnTe (Zinc telluride)

Zinc telluride (ZnTe) is a binary II-VI semiconductor compound with a direct bandgap that makes it attractive for several optoelectronic applications. It has a cubic crystal structure and is known for its photoluminescent properties. ZnTe is particularly important in the development of semiconductor devices for terahertz frequencies. It is also utilized as a buffer layer in some solar cell configurations, especially in tandem with cadmium telluride (CdTe). Moreover, its ability to form alloyed compounds with other II-VI semiconductors, like CdTe, allows for the tuning of optical properties for specific applications. The compound is also studied for potential use in blue and green light-emitting diodes and laser diodes.

Zinc telluride - Wikipedia

More about ZnTe (Zinc telluride) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/ZnTe/nk/Li.yml
ID: ds_06d8d6d079d6
API: /v1/datasets/ds_06d8d6d079d6

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