Optical constants

Refractive index of SrF₂ (Strontium fluoride)

Rodríguez-de Marcos et al. 2013: n,k 0.001582–682.2 µm

Data: tabulated nk
Range: 0.001582–682.2 µm
Points: 623
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.48683
Extinction coefficient k: 0.0070393

Permittivity ε₁: 2.21061
Permittivity ε₂: 0.0209324

Absorption coefficient α: 1505.42 cm⁻¹
Penetration depth δ = λ/(2πk): 13285.3 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.0288763 µm⁻¹

Group index n_g: 1.50379
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

# SrF2 (Strontium fluoride): Rodríguez-de Marcos et al. 2013: n,k 0.001582–682.2 µm
srf2 = ls.fetch_refractiveindex("main", "SrF2", "Rodriguez-de_Marcos", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(srf2.range_nm)  # (1.58249, 682162) nm
eps = srf2.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_d1f3d8e12d22/lightsmith"
srf2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(srf2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (srf2/rodriguez-de-marcos-2013).

# ... load srf2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=srf2)],
    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

Density: 3.98 g/cm³. Film deposited at room temperature.

References

L. Rodríguez-de Marcos, J. I. Larruquert, J. A. Aznárez, M. Fernández-Perea, R. Soufli, J. A. Méndez, S. L. Baker, E. M. Gullikson. Optical constants of SrF₂ thin films in the 25–780-eV spectral range. J. Appl. Phys. 113, 143501 (2013) (Numerical data kindly provided by Juan Larruquert)

doi:10.1063/1.4800099 Optical constants of SrF2 thin films in the 25–780-eV spectral range, Journal of Applied Physics (2013)

Cite

Luis Rodríguez-de Marcos et al.. Optical constants of SrF2 thin films in the 25–780-eV spectral range. Journal of Applied Physics, 113, 143501 (2013), doi:10.1063/1.4800099; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

623 rows as published

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

SrF2 (Strontium fluoride), Rodríguez-de Marcos et al. 2013: n,k 0.001582–682.2 µm: n and k versus wavelength
λ (µm)	n	k
0.001582488	0.999010769	0.000366945
0.001615843	0.998978569	0.000409243
0.001649901	0.998961935	0.000454951
0.001684677	0.998936783	0.000455524
0.001720186	0.998915108	0.000522073
0.001756444	0.998895351	0.000530804
0.001793465	0.99898189	0.000734964
0.001831267	0.999003758	0.000370225
0.001869866	0.998863866	0.000390572
0.001909279	0.998775298	0.0004239
0.001949522	0.998703757	0.000450876
0.001990613	0.998633523	0.00047463
0.00203257	0.998564441	0.000511139
0.002075412	0.998498325	0.000547265
0.002119157	0.998439115	0.00059595
0.002163824	0.99837973	0.000620917
0.002209432	0.998314315	0.000661477
0.002256001	0.998254999	0.000707412
0.002303552	0.99819093	0.000729042
0.002352106	0.998111869	0.000761129
0.002401683	0.998033535	0.00081927
0.002452304	0.997962447	0.000871645
0.002503993	0.997885163	0.000912298
0.002556771	0.997800995	0.000970192
0.002610662	0.997714567	0.001032238
0.002665689	0.997643779	0.001130934
0.002721875	0.997575965	0.001172096
0.002779246	0.997495801	0.001244297
0.002837825	0.997417974	0.001311034
0.00289764	0.997332968	0.001373889
0.002958715	0.997241714	0.001451914
0.003021078	0.997153636	0.001544726
0.003084755	0.997078898	0.001648692
0.003149775	0.997007138	0.001721817
0.003216164	0.996914484	0.001785918
0.003283953	0.996816412	0.001899476
0.003353171	0.996749256	0.002036983
0.003423848	0.996687495	0.0021022
0.003496015	0.996600504	0.002179899
0.003569702	0.996520339	0.002297291
0.003644943	0.996445686	0.002370007
0.00372177	0.99634215	0.002427219
0.003800216	0.996216532	0.002526257
0.003880316	0.996098787	0.002666222
0.003962103	0.996008933	0.002821894
0.004045615	0.995910767	0.002912789
0.004130887	0.995831061	0.003117412
0.004217956	0.995763829	0.003191722
0.004306861	0.995650272	0.003314011
0.004397639	0.995638695	0.003633468
0.004490331	0.995614812	0.003537316
0.004584976	0.995634562	0.003875996
0.004681617	0.995622345	0.003534335
0.004780294	0.995387644	0.003522193
0.004881051	0.995130148	0.003574179
0.004983932	0.994882331	0.003758799
0.005088982	0.994699471	0.004005351
0.005196245	0.994602774	0.004262406
0.00530577	0.994537992	0.00438457
0.005417603	0.994444323	0.00448663
0.005531793	0.994361814	0.004626454
0.00564839	0.994261319	0.00463731
0.005767445	0.994134794	0.004721165
0.005889009	0.99397566	0.004678204
0.006013135	0.993697273	0.004622553
0.006139877	0.993335871	0.004736006
0.006269291	0.993048577	0.005100573
0.006401433	0.9929434	0.005484049
0.00653636	0.992999454	0.005726395
0.006674131	0.993014338	0.005547132
0.006814806	0.992817692	0.00532574
0.006958446	0.992559026	0.005338791
0.007105113	0.992393396	0.005303839
0.007254872	0.991881934	0.004528712
0.007407788	0.991095167	0.004767418
0.007563926	0.990433966	0.005001286
0.007723356	0.990136532	0.005875921
0.007886146	0.990127288	0.005803503
0.008052367	0.989714485	0.00522463
0.008222091	0.989031014	0.005268349
0.008395394	0.98841867	0.005361626
0.008572349	0.987785018	0.005337076
0.008753033	0.987014755	0.005274272
0.008937526	0.986173108	0.005442917
0.009125908	0.985278657	0.005547989
0.009318261	0.984358703	0.00592553
0.009514667	0.983515301	0.006324093
0.009715214	0.982675753	0.006644003
0.009919987	0.981761571	0.00694797
0.010129077	0.980788867	0.007374952
0.010342574	0.97982756	0.007907397
0.010560571	0.978869617	0.008425154
0.010783163	0.977924195	0.009046656
0.011010446	0.976967032	0.00957272
0.01124252	0.975926377	0.010152429
0.011479485	0.974924494	0.01098398
0.011721446	0.973975669	0.011668338
0.011968506	0.973046345	0.012471061
0.012220773	0.972165974	0.013156694
0.012478358	0.971248541	0.013703773
0.012741372	0.970092603	0.013958424
0.01300993	0.968653144	0.014512348
0.013284149	0.96714144	0.01537928
0.013564147	0.965622207	0.016385413
0.013850047	0.964208803	0.017746434
0.014141973	0.963032501	0.019112144
0.014440052	0.961823678	0.020014432
0.014744414	0.96045001	0.021170388
0.015055191	0.95915852	0.022571739
0.015372519	0.958057866	0.023909476
0.015696535	0.956874086	0.024671721
0.01602738	0.955245242	0.02529579
0.016365199	0.953343416	0.026532955
0.016710139	0.951511721	0.02811586
0.017062349	0.949902451	0.029881397
0.017421982	0.948354438	0.031200294
0.017789196	0.946498614	0.032283627
0.01816415	0.944253128	0.033624183
0.018547007	0.94186148	0.03561502
0.018937934	0.939764214	0.038297251
0.019337101	0.938243435	0.041058835
0.019744681	0.937069747	0.043137298
0.020160851	0.935867777	0.044648893
0.020585794	0.934233148	0.045358008
0.021019694	0.931886099	0.045985832
0.021462739	0.928877372	0.046788242
0.021915122	0.92529324	0.047988694
0.022377041	0.921281281	0.049772468
0.022848696	0.917144679	0.052348951
0.023330292	0.913134495	0.05525926
0.023822039	0.908795565	0.057587557
0.024324151	0.903767674	0.0605775
0.024836846	0.898372326	0.064580294
0.025360348	0.89314056	0.069891421
0.025894883	0.88837796	0.075684861
0.026440686	0.884321868	0.082126058
0.026997993	0.880782327	0.087467432
0.027567046	0.875928032	0.090457525
0.028148094	0.868214937	0.094340317
0.028741389	0.85939124	0.104085173
0.029347189	0.853689339	0.119999077
0.029965757	0.853826125	0.136657774
0.030597364	0.858341148	0.147386155
0.031242284	0.862044279	0.148922321
0.031900797	0.861255501	0.147308446
0.03257319	0.855584897	0.144985575
0.033259755	0.843672127	0.142183376
0.033960792	0.826743487	0.147594376
0.034676604	0.809423434	0.161084746
0.035407504	0.793559903	0.17790359
0.03615381	0.775765057	0.193226503
0.036915847	0.753377404	0.216150441
0.037693945	0.732535554	0.257246565
0.038488443	0.719557701	0.308210553
0.039299688	0.7134217	0.365339392
0.040128032	0.722185902	0.447616417
0.040973836	0.768072046	0.550158363
0.041837466	0.865776808	0.631315379
0.042719301	0.955827145	0.578732721
0.043619722	1.005499433	0.558380955
0.044539122	1.050916101	0.544969309
0.0454779	1.112160008	0.540692407
0.046436466	1.142953647	0.422825636
0.047415237	1.122593107	0.378771926
0.048414637	1.102052784	0.36675805
0.049435102	1.084641405	0.358734755
0.050477076	1.063772104	0.360386186
0.051541013	1.056798408	0.40344309
0.052627375	1.083202152	0.443359065
0.053736635	1.113926906	0.422227538
0.054869275	1.128562257	0.407515905
0.056025789	1.138187053	0.393357704
0.057206679	1.14317335	0.37574073
0.05841246	1.137642486	0.351310521
0.059643655	1.122497083	0.341436407
0.060900802	1.104670639	0.341286575
0.062184446	1.086235893	0.352273413
0.063495146	1.086223952	0.395430956
0.064833472	1.096854927	0.390685813
0.066200008	1.094370034	0.385544525
0.067595346	1.082211262	0.383917678
0.069020095	1.061880101	0.391791956
0.070474874	1.032600665	0.412485412
0.071960317	1.02588403	0.500355842
0.073477069	1.053886766	0.550867833
0.075025791	1.081419984	0.572625741
0.076607156	1.115117212	0.621799948
0.078221853	1.178381313	0.659970966
0.079870583	1.220515427	0.59156307
0.081554065	1.217149309	0.573831202
0.08327303	1.203374528	0.581412125
0.085028228	1.185529816	0.61992878
0.08682042	1.205308571	0.744936045
0.088650388	1.323562831	0.888860124
0.090518927	1.503963419	0.870551621
0.092426851	1.601490864	0.650361043
0.094374989	1.567130805	0.496856578
0.096364189	1.50406013	0.494909956
0.098395317	1.472069695	0.525331481
0.100469256	1.490467091	0.606008373
0.102586909	1.55095365	0.616769291
0.104749196	1.6115504	0.584050972
0.10695706	1.618027043	0.466469831
0.10921146	1.575037626	0.454672258
0.111513378	1.530684162	0.482204129
0.113863815	1.585990302	0.692892333
0.116263793	1.71496719	0.651895713
0.118714357	1.819627323	0.622592495
0.121216573	1.902916088	0.501722901
0.12377153	1.929616139	0.368777876
0.126380339	1.910271504	0.257850337
0.129044136	1.871657691	0.196953449
0.131764079	1.834569796	0.157197134
0.134541352	1.801320263	0.129969088
0.137377164	1.772226252	0.110464536
0.140272747	1.746890697	0.095938421
0.143229363	1.724782	0.084791198
0.146248297	1.705392881	0.075963624
0.149330863	1.688271341	0.068806945
0.152478402	1.6730517	0.062890998
0.155692284	1.659439167	0.057918718
0.158973907	1.647195768	0.053681457
0.162324698	1.636130342	0.050028492
0.165746117	1.626084698	0.046839188
0.16923965	1.616925589	0.044028473
0.172806819	1.608543006	0.041530808
0.176449176	1.600844727	0.03929494
0.180168304	1.593753597	0.037281834
0.183965823	1.587204345	0.035457716
0.187843385	1.581140175	0.033795133
0.191802676	1.575511878	0.032272559
0.19584542	1.570276943	0.030872167
0.199973376	1.565398256	0.029579072
0.204188338	1.560843816	0.028381778
0.208492143	1.556585434	0.027268416
0.212886661	1.552597634	0.026229944
0.217373805	1.54885791	0.025258627
0.221955527	1.545346205	0.024347777
0.226633821	1.542044647	0.023491782
0.231410723	1.538937351	0.022685678
0.23628831	1.5360099	0.021924626
0.241268705	1.533249118	0.02120473
0.246354075	1.530643103	0.020522544
0.251546633	1.528181037	0.019875008
0.256848637	1.525853159	0.019259607
0.262262395	1.523650598	0.018673736
0.267790262	1.52156512	0.018115119
0.273434644	1.519589158	0.017581795
0.279197995	1.517715768	0.017071997
0.285082824	1.515938553	0.016584136
0.291091692	1.514251687	0.016116903
0.297227212	1.51264978	0.015668794
0.303492054	1.511127759	0.015238608
0.309888944	1.509680941	0.014825249
0.316420665	1.508304975	0.014427712
0.32309006	1.506995837	0.014045124
0.329900029	1.505749804	0.013676638
0.336853537	1.504563383	0.01332141
0.343953607	1.503433285	0.01297872
0.351203331	1.502356448	0.012647905
0.358605861	1.50133	0.01232835
0.366164419	1.500351276	0.012019538
0.373882293	1.499417785	0.011720889
0.381762842	1.49852716	0.011431898
0.389809494	1.497677176	0.011152105
0.398025751	1.496865743	0.010881083
0.406415186	1.496090894	0.010618441
0.414981451	1.495350795	0.01036383
0.423728272	1.49464371	0.010116861
0.432659456	1.493967987	0.009877205
0.441778887	1.493322067	0.009644554
0.451090534	1.492704478	0.00941862
0.460598449	1.492113834	0.009199145
0.470306768	1.49154883	0.008985868
0.480219715	1.491008221	0.008778531
0.490341604	1.490490823	0.008576907
0.500676838	1.489995517	0.00838078
0.511229914	1.489521237	0.008189946
0.522005424	1.489066981	0.008004228
0.533008056	1.488631798	0.007823425
0.544242597	1.488214774	0.007647362
0.555713935	1.487815044	0.007475874
0.567427062	1.487431781	0.007308803
0.579387074	1.487064201	0.007146005
0.591599175	1.486711561	0.006987341
0.604068677	1.486373152	0.006832667
0.616801007	1.486048292	0.006681852
0.629801704	1.485736333	0.006534775
0.643076425	1.485436653	0.006391318
0.656630946	1.485148664	0.006251373
0.670471163	1.484871803	0.006114829
0.684603099	1.484605529	0.005981581
0.699032903	1.484349324	0.00585153
0.713766853	1.484102692	0.005724581
0.728811359	1.483865157	0.005600644
0.744172968	1.483636265	0.005479637
0.759858363	1.483415582	0.005361471
0.775874369	1.483202687	0.005246065
0.792227953	1.482997177	0.005133342
0.808926233	1.482798661	0.005023228
0.825976473	1.482606769	0.004915652
0.843386091	1.482421141	0.004810547
0.861162662	1.482241432	0.004707844
0.879313921	1.482067305	0.004607479
0.897847766	1.481898438	0.004509389
0.91677226	1.481734518	0.004413516
0.936095637	1.481575243	0.004319803
0.955826305	1.48142032	0.004228195
0.975972848	1.481269466	0.004138636
0.996544033	1.481122403	0.004051074
1.017548809	1.480978862	0.00396546
1.038996316	1.480838583	0.003881744
1.060895885	1.48070131	0.003799882
1.083257045	1.480566794	0.003719826
1.106089526	1.480434793	0.003641531
1.12940326	1.480305067	0.003564955
1.153208393	1.480177382	0.003490057
1.177515281	1.480051508	0.003416797
1.2023345	1.479927219	0.003345136
1.22767685	1.479804293	0.003275035
1.253553356	1.479682507	0.003206458
1.279975277	1.479561646	0.003139368
1.306954109	1.479441491	0.003073732
1.334501591	1.479321829	0.003009516
1.362629708	1.479202447	0.002946687
1.391350699	1.479083132	0.002885213
1.42067706	1.47896367	0.002825062
1.450621551	1.478843851	0.002766206
1.4811972	1.478723459	0.002708615
1.512417312	1.478602283	0.002652261
1.544295469	1.478480106	0.002597115
1.576845542	1.478356712	0.002543151
1.610081692	1.478231882	0.002490342
1.644018382	1.478105394	0.002438663
1.678670377	1.477977024	0.00238809
1.714052752	1.477846545	0.002338598
1.750180905	1.477713725	0.002290163
1.787070552	1.477578329	0.002242763
1.824737746	1.477440117	0.002196375
1.863198875	1.477298843	0.002150977
1.902470672	1.477154258	0.00210655
1.942570226	1.477006104	0.002063071
1.983514982	1.476854119	0.002020521
2.025322757	1.476698034	0.001978879
2.06801174	1.47653757	0.001938129
2.111600505	1.476372442	0.001898249
2.156108018	1.476202358	0.001859224
2.201553643	1.476027015	0.001821035
2.247957154	1.4758461	0.001783665
2.29533874	1.475659291	0.001747097
2.343719017	1.475466254	0.001711316
2.393119036	1.475266646	0.001676305
2.443560289	1.47506011	0.001642051
2.495064723	1.474846277	0.001608536
2.547654749	1.474624763	0.001575748
2.601353247	1.474395172	0.001543672
2.656183582	1.474157091	0.001512295
2.71216961	1.473910094	0.001481603
2.76933569	1.473653736	0.001451585
2.827706694	1.473387554	0.001422227
2.887308021	1.47311107	0.001393517
2.948165602	1.472823783	0.001365445
3.010305916	1.472525173	0.001337998
3.073755999	1.4722147	0.001311168
3.138543459	1.471891799	0.001284942
3.204696485	1.471555884	0.001259311
3.272243859	1.471206342	0.001234266
3.341214971	1.470842535	0.001209797
3.41163983	1.470463797	0.001185897
3.483549077	1.470069433	0.001162557
3.556974001	1.46965872	0.001139768
3.631946546	1.469230901	0.001117524
3.708499335	1.468785185	0.001095817
3.786665674	1.468320746	0.001074641
3.866479573	1.467836724	0.001053992
3.94797576	1.467332218	0.001033862
4.031189692	1.466806285	0.001014246
4.116157575	1.46625794	0.000995141
4.20291638	1.465686154	0.000976541
4.291503853	1.465089849	0.000958444
4.38195854	1.464467898	0.000940848
4.474319796	1.46381912	0.000923749
4.568627808	1.46314228	0.000907146
4.664923608	1.462436083	0.000891036
4.763249094	1.461699173	0.000875421
4.863647047	1.46093013	0.000860302
4.966161151	1.460127464	0.000845679
5.070836007	1.459289615	0.000831553
5.177717161	1.458414945	0.000817927
5.286851115	1.457501734	0.000804803
5.398285352	1.456548178	0.000792188
5.512068359	1.455552386	0.000780089
5.62824964	1.454512371	0.000768509
5.746879746	1.453426043	0.000757456
5.868010292	1.452291206	0.000746938
5.991693982	1.451105551	0.000736966
6.11798463	1.44986665	0.000727553
6.246937184	1.448571953	0.000718712
6.378607751	1.447218769	0.000710454
6.51305362	1.445804266	0.000702796
6.650333288	1.444325461	0.000695754
6.790506485	1.442779205	0.000689347
6.933634199	1.441162184	0.000683607
7.079778704	1.439470902	0.00067855
7.229003588	1.43770166	0.000674199
7.381373777	1.435850555	0.000670585
7.536955568	1.433913457	0.000667738
7.695816651	1.431886002	0.000665696
7.858026149	1.429763573	0.000664505
8.023654637	1.427541279	0.000664194
8.192774179	1.425213933	0.00066481
8.365458358	1.422776032	0.000666401
8.541782309	1.420221733	0.000669021
8.721822749	1.417544833	0.000672743
8.905658013	1.41473874	0.000677626
9.093368086	1.411796431	0.000683734
9.285034642	1.40871042	0.000691142
9.480741072	1.405472722	0.000699935
9.680572528	1.402074809	0.000710206
9.884615955	1.398507577	0.000722086
10.09296013	1.394761283	0.000735658
10.30569571	1.390825465	0.000751043
10.52291524	1.386688898	0.000768373
10.74471325	1.38233951	0.000787794
10.97118623	1.377764307	0.000809487
11.20243272	1.372949283	0.000833643
11.43855334	1.367879291	0.000860429
11.67965082	1.362537906	0.000890061
11.92583006	1.35690729	0.000922775
12.17719817	1.350968014	0.000958835
12.43386453	1.344698886	0.000998598
12.69594079	1.33807669	0.001042353
12.96354101	1.331075852	0.001090443
13.2367816	1.323668095	0.001143272
13.51578145	1.315821983	0.001201288
13.80066195	1.30750232	0.001265015
14.09154705	1.298669408	0.001335126
14.38856333	1.289277864	0.001412153
14.69183999	1.279274854	0.001496815
15.00150901	1.268597324	0.001589927
15.31770511	1.257166557	0.00169241
15.64056588	1.244875138	0.001805443
15.97023178	1.231536523	0.001930257
16.30684625	1.217055433	0.00248954
16.65055576	1.201748377	0.003955609
17.00150984	1.185655497	0.00538351
17.3598612	1.168534888	0.007138915
17.72576576	1.15018551	0.008889853
18.09938271	1.130062586	0.010738589
18.48087462	1.108524504	0.014567523
18.87040747	1.085528988	0.018317419
19.26815074	1.061674594	0.025354409
19.6742775	1.03779365	0.032106713
20.08896444	1.012775111	0.038010663
20.51239199	0.985359589	0.042934523
20.94474439	0.95490713	0.048646772
21.38620975	0.92140146	0.055338718
21.83698015	0.884517885	0.063157415
22.29725172	0.843832927	0.072559121
22.76722471	0.798728147	0.083728693
23.24710362	0.748271798	0.097417773
23.73709723	0.691714971	0.115343895
24.23741874	0.628134394	0.13868298
24.74828584	0.556826482	0.171380718
25.2699208	0.479353981	0.219545427
25.80255058	0.400809745	0.289199238
26.34640693	0.330467574	0.383771957
26.90172648	0.277309388	0.494231984
27.46875084	0.240449042	0.602411836
28.04772673	0.213728401	0.708015614
28.63890605	0.193670235	0.811039468
29.24254602	0.177295712	0.91193665
29.85890929	0.163609978	1.014892584
30.48826403	0.152594688	1.118929547
31.13088407	0.142917776	1.224538156
31.78704901	0.134796585	1.335591958
32.45704434	0.128195762	1.449661508
33.14116158	0.122055258	1.569849273
33.83969838	0.117939574	1.699778354
34.55295868	0.114424187	1.833840049
35.28125281	0.11216474	1.984967273
36.02489764	0.113236095	2.146447643
36.78421674	0.115095865	2.322911345
37.55954047	0.1219965	2.527189495
38.35120619	0.129320993	2.742053622
39.15955833	0.145522898	3.019221501
39.98494861	0.16252309	3.30067775
40.82773616	0.200443332	3.72064557
41.68828766	0.249309884	4.144988
42.56697753	0.379796855	4.910908477
43.4641881	0.546368858	5.661018423
44.38030974	1.519537497	8.143025086
45.31574103	4.75154627	10.59021649
46.27088899	8.016383122	7.05309924
47.2461692	8.470858736	2.629011977
48.24200599	7.305848789	0.809372887
49.25883265	6.259876772	0.492770791
50.2970916	5.589536151	0.255106193
51.35723457	5.098747275	0.197655855
52.43972284	4.744777761	0.141391437
53.54502738	4.468403478	0.119919093
54.67362911	4.252292214	0.105656778
55.82601908	4.076403626	0.094063566
57.00269868	3.931067038	0.090194785
58.20417989	3.810643354	0.086405866
59.43098547	3.708679489	0.08269516
60.68364918	3.62125234	0.079061052
61.96271607	3.546108556	0.075501961
63.26874264	3.478791772	0.066739614
64.60229714	3.416931518	0.061919628
65.9639598	3.363148002	0.060158874
67.35432307	3.314584552	0.052189961
68.77399188	3.268018054	0.046552913
70.22358394	3.225614503	0.044558002
71.70372994	3.187959153	0.04220131
73.2150739	3.152908316	0.037937934
74.75827339	3.11982838	0.035730169
76.33399985	3.089530361	0.034335411
77.94293888	3.061651395	0.032969445
79.58579051	3.03589732	0.032148547
81.26326955	3.01214023	0.031402838
82.97610585	2.990111784	0.030824367
84.72504466	2.969675236	0.030417038
86.51084694	2.950713962	0.030120356
88.33428968	2.933071825	0.029829797
90.19616626	2.916560505	0.029545237
92.09728676	2.901113456	0.029466522
94.03847835	2.886691437	0.029427382
96.02058565	2.873181669	0.029448593
98.04447104	2.860553195	0.029615182
100.1110151	2.848756604	0.029778331
102.221117	2.837720055	0.030010458
104.3756949	2.827400575	0.030248909
106.5756861	2.817735157	0.030498925
108.8220479	2.808684928	0.030773375
111.1157576	2.800212665	0.03104216
113.4578133	2.79226936	0.031295401
115.849234	2.784803198	0.031528757
118.2910601	2.777754999	0.031757295
120.7843541	2.771152647	0.032144852
123.3302008	2.765051334	0.032562219
125.9297079	2.759453705	0.03297097
128.5840064	2.754269652	0.033151011
131.2942512	2.74936988	0.033224729
134.0616215	2.744739633	0.033296927
136.8873214	2.740398358	0.033370235
139.7725803	2.736360868	0.033442145
142.7186536	2.732637188	0.033465953
145.7268231	2.72913542	0.033279153
148.7983977	2.725782172	0.033096209
151.9347137	2.722621584	0.03295656
155.1371359	2.719704051	0.032864678
158.4070574	2.717080443	0.032774692
161.7459012	2.714792097	0.032584381
165.1551198	2.712619133	0.031841657
168.6361966	2.710391886	0.031114264
172.1906463	2.70821366	0.030401887
175.8200152	2.706089461	0.029632368
179.5258827	2.704007493	0.028878542
183.309861	2.701985304	0.028140278
187.1735965	2.700029676	0.027416632
191.1187704	2.698141496	0.026703224
195.1470992	2.696320351	0.026004543
199.2603356	2.694567622	0.025320284
203.4602692	2.692884986	0.02465015
207.7487274	2.691279542	0.023993849
212.1275761	2.689732678	0.023296356
216.5987205	2.688220567	0.022604095
221.1641059	2.686745855	0.021926123
225.8257189	2.685308448	0.021262147
230.5855875	2.683901496	0.020611876
235.4457829	2.682531358	0.020008706
240.4084196	2.681211567	0.019434431
245.4756568	2.679937791	0.018872009
250.6496994	2.678698555	0.018321198
255.9327985	2.677475167	0.017781757
261.3272527	2.676285045	0.017336538
266.8354092	2.675167009	0.016943186
272.4596645	2.674119199	0.016557955
278.2024657	2.673127946	0.016180675
284.0663115	2.672186761	0.015811184
290.0537532	2.671291395	0.01544932
296.167396	2.670438652	0.015094925
302.4098997	2.669625943	0.014747846
308.7839806	2.668851072	0.014407932
315.292412	2.668112123	0.014075035
321.9380256	2.667407386	0.013749009
328.7237129	2.666735302	0.013429713
335.6524263	2.666094366	0.013117009
342.7271805	2.665482808	0.012810759
349.9510537	2.664900543	0.012514458
357.327189	2.6643487	0.012226352
364.8587956	2.663826843	0.011944194
372.5491506	2.663334189	0.011667861
380.4016	2.662870678	0.011397231
388.4195603	2.662436939	0.011132189
396.6065201	2.662034647	0.010872617
404.9660415	2.661667472	0.010618403
413.5017618	2.661343984	0.010369437
422.2173947	2.661092152	0.010125611
431.1167324	2.660857028	0.009709165
440.203647	2.660572372	0.009280414
449.4820921	2.660259789	0.008860514
458.9561048	2.659931376	0.008449281
468.6298071	2.659591597	0.008046537
478.507408	2.659241699	0.007652107
488.5932052	2.658880493	0.007265819
498.891587	2.658503467	0.006887505
509.4070342	2.658097799	0.006517
520.144122	2.657643785	0.006182305
531.1075221	2.65721324	0.006045178
542.3020045	2.656865419	0.005910881
553.73244	2.656568375	0.005779356
565.4038018	2.656312455	0.005650547
577.3211682	2.65609429	0.005524396
589.4897243	2.655913833	0.005400849
601.9147646	2.655773826	0.005279853
614.6016951	2.655680432	0.005161355
627.556036	2.65564522	0.005045302
640.7834235	2.655690082	0.004931645
654.2896129	2.65586071	0.004820334
668.0804806	2.656274251	0.004711321
682.162027	2.657407133	0.004604559

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: —

SrF₂ (Strontium fluoride): all datasets

About SrF2 (Strontium fluoride)

Strontium fluoride (SrF₂) is an inorganic compound that appears as a white crystalline solid at room temperature. With a high melting point and good thermal stability, it is often used in optical applications due to its notable transparency to ultraviolet and visible wavelengths. Its optical clarity has led to its use in the manufacture of windows and lenses, especially in specialized optical systems. Additionally, SrF₂ is employed as a thin film in the production of optical coatings, thanks to its low refractive index. Moreover, the compound is explored for potential use in fluoride ion batteries due to its high ionic conductivity. In nature, strontium fluoride occurs as the mineral strontianite, though most commercial preparations are synthesized through chemical reactions.

More about SrF2 (Strontium fluoride) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/SrF2/nk/Rodriguez-de Marcos.yml
ID: ds_d1f3d8e12d22
API: /v1/datasets/ds_d1f3d8e12d22

Plot