Optical constants

Refractive index of Al₂O₃ (Aluminium sesquioxide, Sapphire, Alumina)

Franta et al. 2015: n,k 0.114–125 µm

Data: tabulated nk
Range: 0.1141–125.1 µm
Points: 609
State: amorphous
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.65371
Extinction coefficient k: 0

Permittivity ε₁: 2.73476
Permittivity ε₂: 0

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

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.0561219 µm⁻¹

Group index n_g: 1.68669
Group velocity dispersion: — fs²/mm

Dispersion parameter D: — 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

# Al2O3 (Aluminium sesquioxide, Sapphire, Alumina): Franta et al. 2015: n,k 0.114–125 µm
al2o3 = ls.fetch_refractiveindex("main", "Al2O3", "Franta", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(al2o3.range_nm)  # (114.114, 125124) nm
eps = al2o3.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_39816b6e6c5a/lightsmith"
al2o3 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(al2o3.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (al2o3/franta-2015).

# ... load al2o3 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=al2o3)],
    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"]).

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.

Comments and conditions

Film Al₂O₃; Deposited by e-beam evaporation on c-Si; 121.5 nm thick film with an amorphous (very fine polycrystalline) structure; Heterogenous data processing combining ellipsometric and spectrophotometric measurements; Room temperature.

Conditions

film thickness: 121.5e-9
substrate: c-Si

References

D. Franta, D. Nečas, I. Ohlídal, A. Giglia. Dispersion model for optical thin films applicable in wide spectral range. Proc. SPIE 9628, 96281U (2015) (Numerical data kindly provided by Daniel Franta)

doi:10.1117/12.2190104 Dispersion model for optical thin films applicable in wide spectral range, SPIE Proceedings (2015)

Cite

Daniel Franta, David Nečas, Ivan Ohlídal and Angelo Giglia. Dispersion model for optical thin films applicable in wide spectral range. SPIE Proceedings, 9628, 96281U (2015), doi:10.1117/12.2190104; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

609 rows as published

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

Al2O3 (Aluminium sesquioxide, Sapphire, Alumina), Franta et al. 2015: n,k 0.114–125 µm: n and k versus wavelength
λ (µm)	n	k
0.114114	1.71641396175	0.830322020891
0.115436	1.74212503575	0.820401717377
0.116772	1.76726883938	0.809259258029
0.118124	1.79178460492	0.796938431612
0.119492	1.81561425741	0.783484961669
0.120876	1.8387024606	0.768946505218
0.122276	1.860996674	0.75337261856
0.123692	1.8824472136	0.736814695028
0.125124	1.90300731054	0.719325879451
0.126573	1.92263316315	0.70096096402
0.128038	1.94128397903	0.68177627021
0.129521	1.95892200453	0.661829521331
0.131021	1.97551254049	0.641179710175
0.132538	1.99102394315	0.619886966075
0.134073	2.00542761056	0.59801242552
0.135625	2.01869795517	0.575618110251
0.137196	2.03081236391	0.552766816519
0.138784	2.04175114764	0.529522018932
0.140391	2.05149748263	0.505947792048
0.142017	2.06003734671	0.482108752591
0.143661	2.06735945368	0.458070024952
0.145325	2.07345518974	0.433897232363
0.147008	2.07831855638	0.409656515969
0.14871	2.0819461244	0.385414583864
0.150432	2.08433700487	0.361238792025
0.152174	2.08549284308	0.33719725907
0.153936	2.08541784277	0.313359016716
0.155718	2.08411882936	0.289794197889
0.157522	2.0816053621	0.266574264538
0.159346	2.07788990771	0.243772277304
0.161191	2.07298809081	0.221463209367
0.163057	2.06691904054	0.19972430688
0.164945	2.05970585819	0.178635498445
0.166855	2.05137623855	0.158279855961
0.168787	2.04196328824	0.13874410874
0.170742	2.03150660034	0.120119211894
0.172719	2.02005366785	0.102500968288
0.174719	2.00766175454	0.0859907004108
0.176742	1.99440039974	0.0706959635775
0.178789	1.9803548318	0.0567312838535
0.180859	1.96563074312	0.0442188910223
0.182953	1.95036123254	0.0332893957207
0.185072	1.93471750243	0.0240823245379
0.187215	1.91892692012	0.0167463648823
0.189383	1.90330866808	0.0114390484951
0.191575	1.88837089746	0.00832526789149
0.193794	1.87529027928	0.00717758246872
0.196038	1.86408979916	0.00634617398311
0.198308	1.8540109281	0.00561744826756
0.200604	1.84478822804	0.00497860014353
0.202927	1.83626784108	0.00441813714626
0.205277	1.82834494724	0.0039259672402
0.207654	1.82094198523	0.00349329524526
0.210058	1.81399853725	0.00311248116111
0.212491	1.80746585349	0.00277689779269
0.214951	1.80130357949	0.00248079914756
0.21744	1.79547765679	0.00221920287479
0.219958	1.78995890241	0.00198778699414
0.222505	1.78472200607	0.00178280000176
0.225082	1.77974479787	0.00160098302863
0.227688	1.77500769806	0.00143950264248
0.230324	1.77049329364	0.00129589294046
0.232991	1.76618600596	0.00116800569519
0.235689	1.76207182525	0.0010539674511
0.238418	1.75813809524	0.000952142602736
0.241179	1.75437333637	0.000861101613176
0.243972	1.75076709874	0.000779593644605
0.246797	1.74730983889	0.000706522974763
0.249655	1.74399281529	0.000640928661335
0.252546	1.74080799934	0.000581966993282
0.25547	1.73774799875	0.000528896334345
0.258428	1.73480599146	0.000481064020923
0.261421	1.73197566801	0.000437895025256
0.264448	1.72925118136	0.000398882136613
0.26751	1.72662710271	0.000363577448808
0.270608	1.72409838264	0.000331584972807
0.273741	1.72166031669	0.00030255421919
0.276911	1.71930851479	0.000276174617368
0.280117	1.71703887405	0.000252170657433
0.283361	1.71484755444	0.000230297656639
0.286642	1.712730957	0.000210338066339
0.289961	1.71068570425	0.000192098247011
0.293319	1.70870862257	0.00017540564908
0.296715	1.70679672628	0.0001601063459
0.300151	1.70494720322	0.000146062872643
0.303627	1.70315740171	0.000133152331193
0.307142	1.70142481869	0.000121264726567
0.310699	1.6997470889	0.00011030150508
0.314297	1.69812197502	0.000100174268456
0.317936	1.69654735868	9.08036415495e-05
0.321618	1.69502123222	8.21182743144e-05
0.325342	1.69354169107	7.40539612115e-05
0.329109	1.69210692681	6.65528634529e-05
0.33292	1.69071522072	5.95628213861e-05
0.336775	1.68936493781	5.30367459671e-05
0.340675	1.68805452127	4.69320796938e-05
0.34462	1.68678248723	4.12103186029e-05
0.34861	1.68554741983	3.58365879986e-05
0.352647	1.6843479664	3.07792655105e-05
0.35673	1.68318283265	2.60096458753e-05
0.360861	1.68205077764	2.15016425402e-05
0.36504	1.68095060788	1.72315217854e-05
0.369266	1.67988116941	1.31776655932e-05
0.373542	1.67884133448	9.32035994093e-06
0.377868	1.67782997092	5.64160557257e-06
0.382243	1.67684582596	2.12494853811e-06
0.386669	1.6758868487	0.0
0.391147	1.67495556877	0.0
0.395676	1.67405035353	0.0
0.400258	1.67316994286	0.0
0.404893	1.67231338073	0.0
0.409581	1.6714798158	0.0
0.414324	1.67066845827	0.0
0.419121	1.66987856361	0.0
0.423975	1.66910942439	0.0
0.428884	1.66836036539	0.0
0.43385	1.66763074035	0.0
0.438874	1.66691992947	0.0
0.443956	1.66622733748	0.0
0.449097	1.66555239204	0.0
0.454297	1.66489454234	0.0
0.459558	1.66425325787	0.0
0.464879	1.6636280273	0.0
0.470262	1.66301835754	0.0
0.475707	1.66242377277	0.0
0.481216	1.66184381363	0.0
0.486788	1.66127803642	0.0
0.492425	1.66072601239	0.0
0.498127	1.66018732702	0.0
0.503895	1.65966157944	0.0
0.50973	1.65914838177	0.0
0.515632	1.65864735857	0.0
0.521603	1.65815814632	0.0
0.527643	1.65768039289	0.0
0.533752	1.65721375709	0.0
0.539933	1.65675790817	0.0
0.546185	1.65631252542	0.0
0.55251	1.65587729777	0.0
0.558907	1.65545192335	0.0
0.565379	1.65503610916	0.0
0.571926	1.65462957072	0.0
0.578549	1.6542320317	0.0
0.585248	1.65384322362	0.0
0.592025	1.65346288551	0.0
0.59888	1.65309076369	0.0
0.605815	1.65272661139	0.0
0.61283	1.65237018855	0.0
0.619926	1.65202126156	0.0
0.627104	1.65167960296	0.0
0.634366	1.65134499126	0.0
0.641712	1.65101721068	0.0
0.649142	1.65069605095	0.0
0.656659	1.65038130709	0.0
0.664263	1.65007277919	0.0
0.671955	1.64977027228	0.0
0.679735	1.64947359606	0.0
0.687606	1.64918256479	0.0
0.695568	1.64889699706	0.0
0.703623	1.64861671567	0.0
0.71177	1.64834154746	0.0
0.720012	1.64807132313	0.0
0.72835	1.64780587709	0.0
0.736783	1.64754504739	0.0
0.745315	1.64728867545	0.0
0.753945	1.64703660606	0.0
0.762676	1.64678868714	0.0
0.771507	1.64654476968	0.0
0.780441	1.6463047076	0.0
0.789478	1.64606835762	0.0
0.798619	1.64583557915	0.0
0.807867	1.64560623418	0.0
0.817222	1.64538018719	0.0
0.826685	1.645157305	0.0
0.836257	1.64493745669	0.0
0.845941	1.64472051354	0.0
0.855736	1.64450634885	0.0
0.865645	1.64429483791	0.0
0.875669	1.64408585788	0.0
0.885809	1.64387928771	0.0
0.896066	1.64367500806	0.0
0.906442	1.64347290116	0.0
0.916938	1.64327285081	0.0
0.927555	1.64307474222	0.0
0.938296	1.64287846198	0.0
0.949161	1.64268389796	0.0
0.960152	1.64249093921	0.0
0.97127	1.64229947595	0.0
0.982517	1.64210939939	0.0
0.993894	1.6419206018	0.0
1.0054	1.64173297623	0.0
1.01704	1.6415464167	0.0
1.02882	1.64136081789	0.0
1.04073	1.64117607519	0.0
1.05279	1.64099208463	0.0
1.06498	1.6408087428	0.0
1.07731	1.64062594672	0.0
1.08978	1.64044359384	0.0
1.1024	1.64026158201	0.0
1.11517	1.64007980928	0.0
1.12808	1.63989817398	0.0
1.14114	1.63971657455	0.0
1.15436	1.63953490955	0.0
1.16772	1.63935307748	0.0
1.18124	1.6391709769	0.0
1.19492	1.63898850616	0.0
1.20876	1.63880556346	0.0
1.22276	1.63862204681	0.0
1.23692	1.63843785385	0.0
1.25124	1.63825288182	0.0
1.26573	1.63806702762	0.0
1.28038	1.63788018753	0.0
1.29521	1.63769225737	0.0
1.31021	1.63750313214	0.0
1.32538	1.63731270642	0.0
1.34073	1.63712087373	0.0
1.35625	1.63692752687	0.0
1.37196	1.63673255774	0.0
1.38784	1.63653585719	0.0
1.40391	1.6363373152	0.0
1.42017	1.63613682033	0.0
1.43661	1.63593426011	0.0
1.45325	1.63572952094	0.0
1.47008	1.63552248753	0.0
1.4871	1.63531304343	0.0
1.50432	1.63510107073	0.0
1.52174	1.63488644962	0.0
1.53936	1.63466905894	0.0
1.55718	1.63444877581	5.043414e-317
1.57522	1.63422547537	4.76557352343e-309
1.59346	1.63399903072	2.8987118624e-301
1.61191	1.63376931331	1.14672070746e-293
1.63057	1.63353619237	2.98013866473e-286
1.64945	1.63329953486	5.13812170237e-279
1.66855	1.63305920567	5.93370570969e-272
1.68787	1.63281506706	4.63308099369e-265
1.70742	1.632566979	2.46837303889e-258
1.72719	1.63231479919	9.05381810335e-252
1.74719	1.63205838203	2.30635566245e-245
1.76742	1.63179757972	4.11528850784e-239
1.78789	1.63153224153	5.18649793754e-233
1.80859	1.63126221335	4.65462725688e-227
1.82953	1.63098733855	2.99838639045e-221
1.85072	1.63070745684	1.39719723326e-215
1.87215	1.63042240476	4.74561778793e-210
1.89383	1.6301320156	1.18362478543e-204
1.91575	1.62983611896	2.18357702767e-199
1.93794	1.62953454073	3.00075381248e-194
1.96038	1.62922710251	3.09316275998e-189
1.98308	1.62891362302	2.40779493992e-184
2.00604	1.62859391588	1.42477564955e-179
2.02927	1.62826779085	6.45035198744e-175
2.05277	1.62793505324	2.24835677096e-170
2.07654	1.62759550392	6.0710471139e-166
2.10058	1.62724893896	1.27758093018e-161
2.12491	1.62689514952	2.10760474866e-157
2.14951	1.62653392139	2.74129853928e-153
2.1744	1.62616503579	2.82698015951e-149
2.19958	1.62578826775	2.32415433272e-145
2.22505	1.62540338758	1.53145567037e-141
2.25082	1.6250101591	8.13034323164e-138
2.27688	1.62460834023	3.49537278434e-134
2.30324	1.62419768287	1.22298787507e-130
2.32991	1.62377793271	3.49952053439e-127
2.35689	1.62334882785	8.2284380272e-124
2.38418	1.62291010003	1.59722304643e-120
2.41179	1.62246147378	2.57112457712e-117
2.43972	1.62200266761	3.44758068542e-114
2.46797	1.62153338921	3.86740150724e-111
2.49655	1.62105334162	3.64480002498e-108
2.52546	1.62056221785	2.89781908476e-105
2.5547	1.62005970204	1.95147869146e-102
2.58428	1.61954547107	1.11753857535e-99
2.61421	1.61901919163	5.46309603466e-97
2.64448	1.61848052045	2.288365315e-94
2.6751	1.61792910596	8.24359708935e-92
2.70608	1.61736458466	2.56313005002e-89
2.73741	1.61678658416	6.90253161228e-87
2.76911	1.61619471932	1.61553383219e-84
2.80117	1.6155885952	3.29719817208e-82
2.83361	1.6149678042	5.88725792996e-80
2.86642	1.61433192562	9.22581590693e-78
2.89961	1.61368052773	1.27283664129e-75
2.93319	1.6130131666	1.55073533114e-73
2.96715	1.61232937927	1.67336246896e-71
3.00151	1.61162869531	1.60394635611e-69
3.03627	1.61091062285	1.36951851398e-67
3.07142	1.61017466195	1.04454299481e-65
3.10699	1.60942028837	7.13574210742e-64
3.14297	1.60864696818	4.37777127705e-62
3.17936	1.6078541454	2.41817664619e-60
3.21618	1.60704124875	1.20569598508e-58
3.25342	1.60620768742	5.4396470018e-57
3.29109	1.60535284996	2.22602513858e-55
3.3292	1.60447610407	8.28199230703e-54
3.36775	1.60357680084	2.80789042017e-52
3.40675	1.60265426192	8.69436707986e-51
3.4462	1.60170779084	2.46409510672e-49
3.4861	1.60073666507	6.40568585993e-48
3.52647	1.59974013808	1.53062147628e-46
3.5673	1.59871743306	3.36858961093e-45
3.60861	1.59766775367	6.84179396923e-44
3.6504	1.59659026671	1.28492181463e-42
3.69266	1.59548410941	2.23558779657e-41
3.73542	1.59434839316	3.61010039764e-40
3.77868	1.59318219399	5.42056696833e-39
3.82243	1.59198454764	7.58114829584e-38
3.86669	1.59075446247	9.89325240551e-37
3.91147	1.58949090173	1.20666973654e-35
3.95676	1.58819279699	1.37783509167e-34
4.00258	1.58685902745	1.47524126052e-33
4.04893	1.58548843554	1.48342971341e-32
4.09581	1.58407981045	1.40305322976e-31
4.14324	1.58263190972	1.25006928459e-30
4.19121	1.5811434149	1.05070559212e-29
4.23975	1.57961297677	8.34323308797e-29
4.28884	1.57803917185	6.26756550807e-28
4.3385	1.57642053445	4.46031091777e-27
4.38874	1.57475551936	3.01099353005e-26
4.43956	1.57304252441	1.93061675909e-25
4.49097	1.57127987234	1.17726371221e-24
4.54297	1.56946581202	6.83564995298e-24
4.59558	1.56759852328	3.78389030526e-23
4.64879	1.56567609691	1.99922594356e-22
4.70262	1.56369652095	1.00936848318e-21
4.75707	1.56165770694	4.8751753998e-21
4.81216	1.55955748183	2.25506995095e-20
4.86788	1.55739352997	1.00005633106e-19
4.92425	1.55516344781	4.25635670985e-19
4.98127	1.55286471974	1.74038129426e-18
5.03895	1.55049467022	6.8434786105e-18
5.0973	1.54805052958	2.59035092373e-17
5.15632	1.54552935016	9.44718852237e-17
5.21603	1.54292805698	3.3228613483e-16
5.27643	1.54024337937	1.12818779743e-15
5.33752	1.53747190219	3.70079232936e-15
5.39933	1.53461000718	1.17389086825e-14
5.46185	1.53165384486	3.60368773812e-14
5.5251	1.52859938581	1.07154667782e-13
5.58907	1.52544235586	3.08865383342e-13
5.65379	1.52217818144	8.63700301379e-13
5.71926	1.5188021032	2.34490934442e-12
5.78549	1.51530896523	6.18562907736e-12
5.85248	1.511693348	1.5865529375e-11
5.92025	1.50794948924	3.95957668114e-11
5.9888	1.50407115073	9.62209976398e-11
6.05815	1.50005179066	2.27831718824e-10
6.1283	1.49588434369	5.25982420619e-10
6.19926	1.49156123719	1.18474197946e-09
6.27104	1.48707438192	2.60524221656e-09
6.34366	1.48241506114	5.59646991923e-09
6.41712	1.47757388436	1.17512964879e-08
6.49142	1.47254066332	2.41335265354e-08
6.56659	1.46730449495	4.85032917925e-08
6.64263	1.46185337536	9.54516698031e-08
6.71955	1.45617439446	1.84034286778e-07
6.79735	1.45025338161	3.4781847632e-07
6.87606	1.4440747828	6.44727246658e-07
6.95568	1.43762154452	1.17272129284e-06
7.03623	1.43087485306	2.09425876428e-06
7.1177	1.42381378157	3.67366550258e-06
7.20012	1.41641511617	6.33308781271e-06
7.2835	1.40865269532	1.07346374401e-05
7.36783	1.40049722274	1.78987249627e-05
7.45315	1.39191548392	2.93716243143e-05
7.53945	1.38286958965	4.74599559156e-05
7.62676	1.37331595991	7.55602307895e-05
7.71507	1.36320426298	0.000118642829507
7.80441	1.35247521907	0.00018404451058
7.89478	1.34105805234	0.000282972521758
7.98619	1.32886659942	0.000433649603315
8.07867	1.3157949846	0.000667834694529
8.17222	1.30171411035	0.00104305600956
8.26685	1.2864752219	0.00166194097389
8.36257	1.26992774048	0.00269564095482
8.45941	1.25195957487	0.00439997271691
8.55736	1.23255640217	0.00710418439921
8.65645	1.21186117773	0.0111519474367
8.75669	1.19019177307	0.0167916402301
8.85809	1.16797602871	0.0240483427203
8.96066	1.14558828936	0.0326458502522
9.06442	1.12313645275	0.042051676981
9.16938	1.10029701808	0.0516691154106
9.27555	1.07629827826	0.0611161366637
9.38296	1.05007599602	0.0704726294355
9.49161	1.0205396974	0.0803950384004
9.60152	0.986837028484	0.0920773690829
9.7127	0.948538573211	0.107115296814
9.82517	0.905735706855	0.127357127964
9.93894	0.859108957082	0.154794188801
10.054	0.810060252584	0.191464295891
10.1704	0.760960501774	0.239223595598
10.2882	0.715363605421	0.299141887129
10.4073	0.677635840358	0.370496904889
10.5279	0.651518642928	0.450190941375
10.6498	0.638515282932	0.533731751783
10.7731	0.637783618359	0.617115615784
10.8978	0.647336512646	0.697818326751
11.024	0.665120694528	0.774625089839
11.1517	0.689454897598	0.847101353322
11.2808	0.719072559927	0.915185419324
11.4114	0.75303512347	0.978965799614
11.5436	0.790637417517	1.03857465847
11.6772	0.831331351407	1.09414622898
11.8124	0.874675530755	1.14579945598
11.9492	0.920300637734	1.19363491392
12.0876	0.967885122077	1.23773871528
12.2276	1.01714180319	1.27818409768
12.3692	1.06780718298	1.31503648985
12.5124	1.11963470178	1.3483575099
12.6573	1.17239177102	1.37820660232
12.8038	1.22585628993	1.40464464177
12.9521	1.2798152834	1.42773562225
13.1021	1.33406451338	1.4475475872
13.2538	1.38840718166	1.46415466726
13.4073	1.44265515899	1.47763631264
13.5625	1.49662801333	1.48807883657
13.7196	1.5501536923	1.49557502259
13.8784	1.60306852007	1.50022430265
14.0391	1.65521803456	1.50213197765
14.2017	1.70645598502	1.50141001713
14.3661	1.75664645719	1.49817487041
14.5325	1.80566184755	1.49254892887
14.7008	1.85338455711	1.48465859819
14.871	1.89970658672	1.47463421081
15.0432	1.94452833808	1.46261045432
15.2174	1.98776077205	1.44872419887
15.3936	2.02932306515	1.43311585138
15.5718	2.06914405362	1.415927862
15.7522	2.10716185629	1.397304713
15.9346	2.14332294453	1.37739329689
16.1191	2.17758279269	1.35634227967
16.3057	2.20990706354	1.33430129129
16.4945	2.24027014953	1.31142184028
16.6855	2.26865603342	1.28785675823
16.8787	2.29505803298	1.26376032422
17.0742	2.31948085055	1.23928705688
17.2719	2.34194128891	1.21459127051
17.4719	2.36246525755	1.18982837505
17.6742	2.38109330057	1.1651515087
17.8789	2.39787749087	1.14071248126
18.0859	2.41288508673	1.11665901324
18.2953	2.42619542267	1.09313497295
18.5072	2.43790405233	1.0702768561
18.7215	2.44811947588	1.04821339872
18.9383	2.45696515373	1.02706245944
19.1575	2.46457861001	1.00692896957
19.3794	2.47110831643	0.987903537393
19.6038	2.47671419134	0.970059396353
19.8308	2.48156499442	0.953450614015
20.0604	2.48583585814	0.938110297626
20.2927	2.489705386	0.924049168833
20.5277	2.49335238094	0.911254618555
20.7654	2.49695229744	0.899690341528
21.0058	2.50067353936	0.889296629423
21.2491	2.5046737492	0.879991371833
21.4951	2.50909624957	0.871671777292
21.744	2.51406680229	0.86421678422
21.9958	2.51969084241	0.857490088041
22.2505	2.52605132297	0.851343669906
22.5082	2.53320727351	0.84562167903
22.7688	2.54119313316	0.840164498211
23.0324	2.55001887241	0.834812813178
23.2991	2.55967087102	0.829411511929
23.5689	2.57011347766	0.823813258563
23.8418	2.58129114336	0.817881615214
24.1179	2.59313099863	0.811493621249
24.3972	2.60554573349	0.804541777134
24.6797	2.61843664036	0.796935417301
24.9655	2.63169668949	0.788601488961
25.2546	2.64521352358	0.779484780027
25.547	2.6588722792	0.769547658333
25.8428	2.67255816486	0.758769396013
26.1421	2.68615874811	0.747145158114
26.4448	2.69956592369	0.734684734351
26.751	2.71267755254	0.721411088612
27.0608	2.72539877512	0.707358793899
27.3741	2.7376430135	0.692572411728
27.6911	2.7493326839	0.677104865827
28.0117	2.76039964706	0.661015850627
28.3361	2.77078542567	0.644370306453
28.6642	2.78044121997	0.627236985302
28.9961	2.78932775165	0.609687124267
29.3319	2.7974149655	0.591793237609
29.6715	2.80468161581	0.573628033667
30.0151	2.81111476283	0.555263458669
30.3627	2.8167092017	0.536769866353
30.7142	2.82146684372	0.518215309793
31.0699	2.82539606787	0.499664949952
31.4297	2.82851105715	0.481180574141
31.7936	2.83083113299	0.462820216629
32.1618	2.83238009829	0.444637873032
32.5342	2.83318559787	0.4266832999
32.9109	2.83327850358	0.409001890743
33.292	2.83269232959	0.391634619968
33.6775	2.831462682	0.374618046328
34.0675	2.82962674596	0.357984367925
34.462	2.82722281206	0.341761521199
34.861	2.82428984342	0.325973316782
35.2647	2.82086708344	0.3106396057
35.673	2.8169937043	0.295776469816
36.0861	2.812708495	0.281396431062
36.504	2.80804958809	0.267508674439
36.9266	2.80305422321	0.254119280368
37.3542	2.79775854559	0.241231462439
37.7868	2.79219743775	0.228845807058
38.2243	2.7864043817	0.216960512053
38.6669	2.78041134981	0.205571621596
39.1147	2.77424872174	0.194673255305
39.5676	2.76794522528	0.184257829696
40.0258	2.76152789851	0.17431627054
40.4893	2.75502207134	0.164838214953
40.9581	2.748451364	0.155812202343
41.4324	2.74183770047	0.1472258536
41.9121	2.73520133496	0.13906603811
42.3975	2.72856088923	0.131319028405
42.8884	2.72193339944	0.1239706424
43.385	2.71533437048	0.117006373345
43.8874	2.70877783679	0.110411507708
44.3956	2.70227642755	0.10417123137
44.9097	2.69584143581	0.0982707245263
45.4297	2.68948288994	0.0926952458112
45.9558	2.68320962652	0.0874302062014
46.4879	2.67702936389	0.0824612332778
47.0262	2.67094877547	0.0777742264697
47.5707	2.66497356241	0.0733554039098
48.1216	2.65910852452	0.0691913415466
48.6788	2.65335762979	0.0652690051279
49.2425	2.64772408131	0.0615757757032
49.8127	2.64221038178	0.0580994692335
50.3895	2.63681839541	0.0548283508975
50.973	2.63154940639	0.051751144667
51.5632	2.6264041749	0.0488570386594
52.1603	2.6213829894	0.0461356867947
52.7643	2.61648571606	0.0435772072051
53.3752	2.61171184495	0.0411721778459
53.9933	2.60706053303	0.0389116297062
54.6185	2.60253064408	0.036787037991
55.251	2.5981207856	0.0347903116142
55.8907	2.59382934294	0.0329137813043
56.5379	2.58965451051	0.0311501866062
57.1926	2.58559432034	0.0294926620232
57.8549	2.58164666831	0.0279347225178
58.5248	2.5778093377	0.026470248573
59.2025	2.57408002086	0.0250934709766
59.888	2.57045633816	0.0237989554889
60.5815	2.56693585588	0.0225815875072
61.283	2.56351610145	0.0214365568539
61.9926	2.56019457746	0.0203593427688
62.7104	2.55696877382	0.0193456991914
63.4366	2.55383617885	0.0183916403906
64.1712	2.55079428867	0.0174934270001
64.9142	2.54784061548	0.0166475524973
65.6659	2.54497269503	0.0158507301536
66.4263	2.54218809262	0.0150998804864
67.1955	2.5394844085	0.0143921192214
67.9735	2.5368592825	0.0137247457756
68.7606	2.5343103975	0.0130952322686
69.5568	2.53183548293	0.0125012130532
70.3623	2.52943231685	0.0119404747693
71.177	2.52709872821	0.0114109469031
72.0012	2.52483259838	0.0109106928487
72.835	2.5226318619	0.0104379014543
73.6783	2.52049450767	0.00999087903743
74.5315	2.51841857893	0.00956804185751
75.3945	2.5164021737	0.00916790902234
76.2676	2.51444344435	0.00878909581619
77.1507	2.51254059751	0.00843030742693
78.0441	2.51069189352	0.00809033305635
78.9478	2.50889564541	0.00776804039512
79.8619	2.50715021865	0.00746237044087
80.7867	2.50545402977	0.00717233264654
81.7222	2.50380554551	0.00689700037708
82.6685	2.50220328181	0.00663550665897
83.6257	2.5006458025	0.0063870402065
84.5941	2.49913171839	0.00615084170717
85.5736	2.49765968556	0.0059262003535
86.5645	2.49622840476	0.00571245060205
87.5669	2.49483661957	0.00550896915139
88.5809	2.49348311549	0.00531517212001
89.6066	2.49216671852	0.00513051241528
90.6442	2.49088629402	0.00495447727925
91.6938	2.48964074535	0.00478658600106
92.7555	2.48842901263	0.00462638778436
93.8296	2.48725007176	0.00447345975942
94.9161	2.48610293278	0.00432740513194
96.0152	2.48498663932	0.00418785145627
97.127	2.48390026688	0.00405444902875
98.2517	2.48284292197	0.00392686938944
99.3894	2.48181374127	0.00380480392646
100.54	2.48081188982	0.00368796257735
101.704	2.47983656105	0.00357607261648
102.882	2.47888697497	0.00346887752825
104.073	2.4779623775	0.00336613595555
105.279	2.4770620397	0.00326762072034
106.498	2.47618525629	0.00317311791189
107.731	2.47533134567	0.00308242603519
108.978	2.47449964825	0.00299535521953
110.24	2.47368952629	0.00291172647882
111.517	2.47290036234	0.00283137102377
112.808	2.47213155952	0.00275412961837
114.114	2.47138253998	0.00267985198187
115.436	2.47065274424	0.00260839622998
116.772	2.46994163125	0.00253962835278
118.124	2.46924867676	0.00247342172928
119.492	2.46857337342	0.00240965667257
120.876	2.46791522977	0.00234822000635
122.276	2.46727377006	0.00228900466856
123.692	2.46664853328	0.00223190934206
125.124	2.46603907285	0.00217683810884

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: —

Al₂O₃ (Aluminium sesquioxide, Sapphire, Alumina): all datasets

Crystal

Thin film

About Al2O3 (Aluminium sesquioxide, Sapphire, Alumina)

Al₂O₃, commonly known as alumina or aluminum oxide, is a ceramic material that has a wide range of applications due to its excellent mechanical and optical properties. This compound crystallizes in various phases, the most stable and common of which is the corundum structure. Alumina is transparent in the ultraviolet to the infrared range, making it a versatile material for a variety of optical applications such as protective windows and lenses. It has a high refractive index and is also known for its strong dielectric properties. One of the key attributes of Al₂O₃ is its remarkable thermal stability and resistance to chemical attack, which makes it suitable for harsh environment applications. Furthermore, the material has been investigated for its nonlinear optical characteristics, although it is generally less efficient in this regard compared to other nonlinear optical materials. Alumina can also serve as a substrate material for thin-film optical coatings. In summary, Al₂O₃ is a robust and multifunctional material that is extensively studied for its enduring relevance in both traditional and advanced optical systems. Mineral: Corundum Gemstones: Sapphire, Ruby

More about Al2O3 (Aluminium sesquioxide, Sapphire, Alumina) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/Al2O3/nk/Franta.yml
ID: ds_39816b6e6c5a
API: /v1/datasets/ds_39816b6e6c5a

Plot