Optical constants

Refractive index of B₄C (Boron carbide)

Larruquert et al. 2012: n,k 0.001738–21.54 µm

Data: tabulated nk
Range: 0.001738–21.54 µm
Points: 1480
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 3.23159
Extinction coefficient k: 0.533303

Permittivity ε₁: 10.1588
Permittivity ε₂: 3.44683

Absorption coefficient α: 114052 cm⁻¹
Penetration depth δ = λ/(2πk): 175.359 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: 0.409216 µm⁻¹

Group index n_g: 2.99113
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

# B4C (Boron carbide): Larruquert et al. 2012: n,k 0.001738–21.54 µm
b4c = ls.fetch_refractiveindex("main", "B4C", "Larruquert", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(b4c.range_nm)  # (1.73771, 21538.1) nm
eps = b4c.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_764e41eeda00/lightsmith"
b4c = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(b4c.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (b4c/larruquert-2012).

# ... load b4c as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=b4c)],
    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: 2.28 g/cm³. Film deposited at room temperature.

References

J. I. Larruquert, A. P. Pérez-Marín, S. García-Cortés, L. Rodríguez-de Marcos, J. A. Aznárez, J. A. Méndez. Self-consistent optical constants of sputter-deposited B₄C thin films. J. Opt. Soc. Am. A 29, 117-123 (2012) (Numerical data kindly provided by Juan Larruquert)

doi:10.1364/josaa.29.000117 Self-consistent optical constants of sputter-deposited B_4C thin films, Journal of the Optical Society of America A (2011)

Cite

Juan I. Larruquert et al.. Self-consistent optical constants of sputter-deposited B_4C thin films. Journal of the Optical Society of America A, 29, 117 (2011), doi:10.1364/josaa.29.000117; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

1480 rows as published

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

B4C (Boron carbide), Larruquert et al. 2012: n,k 0.001738–21.54 µm: n and k versus wavelength
λ (µm)	n	k
0.001737709	0.99905711	0.000132914
0.001740179	0.99905448	0.000134612
0.001742669	0.99905229	0.000135253
0.001745199	0.99905032	0.000136325
0.001747679	0.99904823	0.000135851
0.001750189	0.99904533	0.000135771
0.001752679	0.99904133	0.000135338
0.001755199	0.99903824	0.000138289
0.001757659	0.99903653	0.000138395
0.001760209	0.99903295	0.000137945
0.00176269	0.99903006	0.000140532
0.00176515	0.99902791	0.00014046
0.0017677	0.99902482	0.000141444
0.00177021	0.99902243	0.000142897
0.00177267	0.99902078	0.000143643
0.0017752	0.99901816	0.000142822
0.00177771	0.99901546	0.000143945
0.00178016	0.99901188	0.000142528
0.0017827	0.99900811	0.000145386
0.00178519	0.99900564	0.000146054
0.00178769	0.99900387	0.000148228
0.00179021	0.99900162	0.000146954
0.001792711	0.99899912	0.00014866
0.001795211	0.99899636	0.000147082
0.001797681	0.99899234	0.000148057
0.001800181	0.99898896	0.000149353
0.001802691	0.99898676	0.000151357
0.001805171	0.99898439	0.000150734
0.001807711	0.99898049	0.000151396
0.001810161	0.99897823	0.000154066
0.001812711	0.99897568	0.000153091
0.001815221	0.9989724	0.000155154
0.001817691	0.99897099	0.000156627
0.001820201	0.99896888	0.000155413
0.001822712	0.99896451	0.000155056
0.001825162	0.99896171	0.000158445
0.001827682	0.99896051	0.000158287
0.001830192	0.99895654	0.00015671
0.001832702	0.99895381	0.000160561
0.001835222	0.9989519	0.000158429
0.001837692	0.99894671	0.000158149
0.001840202	0.99894293	0.000162131
0.001842652	0.99894141	0.000163639
0.001845172	0.9989402	0.000164772
0.001847702	0.99893818	0.000163301
0.001850192	0.9989333	0.000162128
0.001852693	0.99892988	0.00016622
0.001855213	0.99892791	0.000165754
0.001857713	0.99892465	0.000166702
0.001860193	0.99892125	0.000167485
0.001862693	0.9989195	0.000170498
0.001865213	0.9989177	0.000168693
0.001867693	0.99891355	0.000168655
0.001870183	0.99890921	0.000170028
0.001872703	0.9989066	0.000173382
0.001875173	0.99890584	0.000174406
0.001877693	0.99890321	0.000172658
0.001880224	0.99889914	0.000173755
0.001882664	0.99889662	0.000175523
0.001885214	0.99889374	0.00017518
0.001887714	0.99889037	0.000176642
0.001890174	0.99888763	0.000177699
0.001892694	0.9988855	0.000179155
0.001895214	0.99888261	0.000178285
0.001897694	0.99887916	0.000179862
0.001900214	0.99887625	0.000180707
0.001902684	0.99887481	0.000182747
0.001905184	0.99887185	0.00017955
0.001907724	0.99886591	0.000180577
0.001910195	0.99886202	0.000184313
0.001912695	0.99886117	0.000187277
0.001915185	0.99885869	0.000185285
0.001917685	0.99885636	0.00018893
0.001920195	0.99885406	0.000186314
0.001922695	0.99885037	0.000188272
0.001925195	0.99884631	0.000187268
0.001927685	0.99884274	0.000191325
0.001930165	0.99884138	0.000192163
0.001932705	0.99883839	0.000191803
0.001935175	0.99883499	0.000193476
0.001937705	0.99883292	0.00019528
0.001940216	0.99883066	0.000195025
0.001942666	0.99882807	0.000195845
0.001945186	0.99882452	0.000194983
0.001947686	0.99881998	0.000196731
0.001950176	0.99881917	0.000201023
0.001952706	0.99881716	0.000196744
0.001955206	0.99881243	0.000198514
0.001957666	0.99880875	0.000198825
0.001960196	0.99880519	0.00020086
0.001962706	0.99880136	0.000201233
0.001965196	0.9987986	0.000205005
0.001967676	0.99879651	0.000204733
0.001970217	0.99879258	0.000206091
0.001972717	0.99879145	0.000210199
0.001975167	0.99879005	0.000207483
0.001977717	0.99878562	0.000208206
0.001980177	0.99878259	0.000210237
0.001982697	0.99877972	0.000210769
0.001985207	0.99877724	0.000212887
0.001987667	0.99877521	0.000212902
0.001990197	0.99877142	0.000212795
0.001992737	0.99876881	0.000216005
0.001995157	0.99876751	0.000215584
0.001997697	0.99876369	0.000214396
0.002000208	0.99875909	0.000216329
0.002002668	0.99875804	0.00022026
0.002005168	0.99875729	0.000217438
0.002007688	0.99875064	0.000214331
0.002010188	0.99874619	0.000221348
0.002012708	0.99874516	0.000220899
0.002015198	0.99874151	0.000221156
0.002017698	0.99873862	0.000223627
0.002020188	0.9987366	0.000223912
0.002022708	0.99873299	0.000223541
0.002025198	0.99872902	0.000225407
0.002027698	0.99872735	0.000228141
0.002030219	0.99872509	0.000226261
0.002032689	0.99872036	0.000226496
0.002035199	0.99871618	0.00022895
0.002037709	0.99871407	0.000231557
0.002040199	0.99871092	0.000230765
0.002042699	0.99870914	0.000235069
0.002045219	0.99870619	0.000231086
0.002047689	0.9987017	0.000235087
0.002050209	0.99869993	0.000235913
0.002052689	0.99869672	0.000235453
0.002055209	0.99869132	0.00023618
0.002057729	0.99868987	0.000243016
0.0020602	0.99869006	0.000240298
0.0020627	0.99868578	0.000239114
0.00206521	0.99868179	0.000241282
0.00206768	0.99867885	0.000242028
0.00207023	0.9986758	0.000243425
0.0020727	0.99867315	0.000244174
0.0020752	0.99867005	0.000244411
0.00207772	0.99866571	0.000244595
0.00208019	0.99866197	0.000247411
0.00208271	0.99865958	0.000248945
0.0020852	0.99865559	0.000248944
0.002087711	0.99865309	0.000253962
0.002090221	0.99865306	0.000254101
0.002092691	0.9986493	0.000251505
0.002095191	0.99864536	0.000255375
0.002097681	0.99864407	0.000256208
0.002100211	0.99864165	0.00025547
0.002102711	0.99863672	0.000254576
0.002105201	0.99863363	0.000259237
0.002107721	0.99863207	0.000258135
0.002110211	0.99862784	0.000257812
0.002112691	0.99862331	0.000259536
0.002115191	0.9986193	0.000261901
0.002117702	0.99861838	0.000266641
0.002120202	0.99861757	0.000264373
0.002122692	0.99861407	0.000264464
0.002125192	0.99860975	0.000264175
0.002127712	0.9986056	0.000266743
0.002130212	0.99860222	0.000268236
0.002132702	0.99860011	0.000271755
0.002135182	0.99859929	0.000272338
0.002137672	0.99859743	0.000271743
0.002140222	0.99859266	0.000270081
0.002142682	0.99858907	0.000274592
0.002145182	0.99858815	0.000275083
0.002147713	0.99858467	0.000273675
0.002150223	0.99858195	0.000276799
0.002152673	0.99857765	0.000273956
0.002155213	0.99857466	0.000281753
0.002157683	0.99858012	0.000283484
0.002159763	0.99857781	0.000270536
0.002165013	0.99856251	0.000274534
0.002170103	0.99855327	0.000276418
0.002175183	0.99854592	0.000281993
0.002180214	0.99853961	0.000283219
0.002185224	0.9985335	0.000287297
0.002190244	0.99852711	0.000287239
0.002195284	0.99851956	0.000290355
0.002200244	0.99851311	0.000292644
0.002205264	0.99850651	0.000294668
0.002210285	0.99849927	0.000296057
0.002215255	0.99849175	0.000298314
0.002220275	0.99848303	0.000299633
0.002225265	0.9984748	0.000304496
0.002230255	0.99846647	0.000306407
0.002235295	0.99845736	0.00031205
0.002240296	0.99844932	0.000317335
0.002245256	0.99844151	0.000323921
0.002250266	0.99843508	0.000332193
0.002255296	0.99843102	0.000340807
0.002260256	0.99842862	0.00034794
0.002265277	0.99842708	0.00035471
0.002270267	0.9984272	0.000361174
0.002275257	0.99842848	0.000365425
0.002280267	0.99843136	0.00036941
0.002285257	0.9984353	0.000368921
0.002290257	0.99843898	0.000365911
0.002295298	0.99843895	0.000356231
0.002300288	0.99843139	0.000347582
0.002305258	0.99842208	0.00034753
0.002310268	0.99841886	0.000351697
0.002315288	0.99842531	0.000351804
0.002320278	0.9984258	0.000328716
0.002325279	0.99840369	0.000307287
0.002330289	0.998381	0.000315841
0.002335259	0.9983696	0.000318404
0.002340299	0.99835753	0.000319753
0.002345289	0.99834734	0.000324675
0.002350249	0.99833817	0.000325517
0.00235528	0.9983286	0.000329056
0.00236027	0.99831979	0.000330798
0.00236529	0.99831091	0.000333668
0.00237028	0.99830232	0.000335502
0.00237526	0.99829321	0.000337688
0.00238028	0.99828423	0.000340694
0.002385281	0.99827574	0.000343621
0.002390271	0.99826778	0.000346708
0.002395261	0.9982593	0.000348551
0.002400271	0.99825104	0.000352651
0.002405301	0.99824406	0.000355375
0.002410251	0.99823601	0.000356432
0.002415272	0.99822735	0.000359789
0.002420272	0.99822001	0.000362916
0.002425312	0.99821189	0.000364081
0.002430282	0.99820295	0.000367076
0.002435292	0.99819481	0.000370784
0.002440282	0.99818775	0.000374185
0.002445283	0.99818043	0.000375821
0.002450273	0.99817125	0.000377436
0.002455283	0.99816345	0.000382987
0.002460253	0.99815659	0.000384146
0.002465303	0.99814797	0.000386765
0.002470283	0.99813992	0.000390111
0.002475274	0.99813238	0.000393054
0.002480294	0.9981238	0.000395006
0.002485284	0.99811606	0.000400004
0.002490304	0.99810881	0.000401677
0.002495294	0.99810068	0.000404974
0.002500264	0.99809293	0.000407858
0.002505275	0.99808474	0.000410874
0.002510305	0.99807758	0.000415297
0.002515265	0.99807074	0.000416964
0.002520285	0.9980625	0.000419308
0.002525275	0.99805452	0.000422566
0.002530285	0.99804661	0.000425065
0.002535286	0.99803808	0.000427949
0.002540266	0.99803069	0.000432345
0.002545266	0.99802303	0.000433697
0.002550286	0.99801427	0.000437247
0.002555266	0.99800625	0.00044081
0.002560266	0.99799875	0.000444498
0.002565287	0.99799105	0.000447105
0.002570277	0.9979829	0.00045033
0.002575297	0.99797497	0.000453942
0.002580257	0.9979678	0.000457545
0.002585297	0.99796005	0.000459613
0.002590287	0.99795132	0.000462727
0.002595308	0.9979437	0.000467492
0.002600298	0.99793662	0.000469938
0.002605268	0.99792895	0.000472969
0.002610288	0.99792101	0.000475511
0.002615298	0.99791275	0.000478524
0.002620288	0.9979044	0.000481522
0.002625279	0.99789624	0.000485075
0.002630299	0.99788734	0.000487692
0.002635269	0.99787945	0.000493383
0.002640279	0.99787251	0.000495907
0.002645299	0.99786385	0.000498559
0.00265027	0.99785614	0.000503631
0.00265531	0.99784857	0.000505794
0.00266028	0.99784047	0.000509816
0.00266527	0.99783342	0.000513263
0.00267028	0.99782427	0.000514203
0.0026753	0.9978158	0.00052107
0.002680291	0.99780919	0.00052342
0.002685251	0.99780145	0.000526663
0.002690301	0.99779419	0.000529825
0.002695291	0.99778501	0.000530351
0.002700311	0.99777557	0.000536151
0.002705281	0.99776884	0.000540069
0.002710302	0.99776019	0.000541155
0.002715262	0.99775275	0.000547164
0.002720312	0.99774326	0.000545227
0.002725272	0.99773315	0.000553192
0.002730292	0.9977256	0.000555712
0.002735282	0.99771723	0.000560186
0.002740293	0.99770985	0.000563475
0.002745283	0.99769949	0.000563884
0.002750273	0.9976899	0.000572045
0.002755273	0.99768289	0.000575128
0.002760313	0.99767529	0.000579298
0.002765303	0.99766778	0.000581057
0.002770264	0.99765742	0.000581511
0.002775284	0.99764554	0.000586044
0.002780304	0.9976357	0.00059209
0.002785294	0.99762794	0.000596575
0.002790284	0.9976157	0.000595484
0.002795304	0.99760313	0.00060528
0.002800295	0.99758863	0.000606353
0.002810465	0.99757187	0.000642808
0.002820475	0.99757001	0.000651418
0.002830486	0.9975595	0.000655571
0.002840506	0.99754464	0.000662077
0.002850486	0.99752929	0.000670743
0.002860497	0.99751611	0.000681051
0.002870477	0.9975032	0.000686906
0.002880457	0.99748908	0.000693806
0.002890478	0.99747132	0.000697319
0.002900428	0.99745609	0.000711515
0.002910538	0.9974435	0.00071484
0.002920519	0.99742452	0.000718124
0.002930469	0.99740471	0.000728321
0.002940509	0.9973855	0.00073753
0.00295053	0.99737045	0.000753528
0.00296051	0.99735752	0.00075951
0.00297049	0.99734064	0.000767452
0.002980411	0.99732282	0.00077689
0.002990521	0.99730812	0.000791485
0.003000531	0.99729841	0.000800485
0.003010512	0.9972811	0.000799244
0.003020462	0.99726281	0.000814653
0.003030512	0.99724703	0.000819645
0.003040553	0.99723095	0.000833243
0.003050503	0.99721803	0.000840264
0.003060483	0.99720279	0.00084638
0.003070434	0.99718462	0.000851446
0.003080544	0.99716487	0.000861076
0.003090494	0.99714693	0.000871708
0.003100415	0.99713134	0.000883314
0.003110525	0.99711729	0.000892074
0.003120475	0.99710016	0.000896196
0.003130516	0.997081	0.000905603
0.003140496	0.99705912	0.000911475
0.003150446	0.99704154	0.000931075
0.003160497	0.99702806	0.000936551
0.003170537	0.99700728	0.000942639
0.003180457	0.99698494	0.000955224
0.003190508	0.99696737	0.000972486
0.003200488	0.9969543	0.000984516
0.003210498	0.99693733	0.000990515
0.003220509	0.99691797	0.00100305
0.003230499	0.99689992	0.00101431
0.003240479	0.99688257	0.00102749
0.00325049	0.99686489	0.0010382
0.00326054	0.99684721	0.00105237
0.00327052	0.99683066	0.00106451
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0.507217137	3.1943148	0.62636173
0.510287231	3.1960691	0.62240085
0.513367337	3.1977945	0.61878225
0.516447439	3.1997522	0.61506477
0.519547546	3.2013251	0.61075945
0.522607655	3.2028325	0.60750577
0.525687754	3.2045777	0.6036535
0.528787865	3.2062663	0.60007454
0.531867962	3.2079802	0.59623085
0.534948073	3.209522	0.59240228
0.538028179	3.2108588	0.58856895
0.541108274	3.2121926	0.5851321
0.544198373	3.2137036	0.5816115
0.547268475	3.2151654	0.57798713
0.550358584	3.2164481	0.57434287
0.553428693	3.2178038	0.57110777
0.556508792	3.2193474	0.56762258
0.559598891	3.2207717	0.56396595
0.562688995	3.2219756	0.5603417
0.565769111	3.2232025	0.55705443
0.568839205	3.2244631	0.55359243
0.571929319	3.2258193	0.5503515
0.575009424	3.2270178	0.54659902
0.578089513	3.2279606	0.54338527
0.58117962	3.2293917	0.54046297
0.584249744	3.2305621	0.53649572
0.587319841	3.2314744	0.5335986
0.590429936	3.2327471	0.53031475
0.593510037	3.2338727	0.52696853
0.596590146	3.2350077	0.52379588
0.599650241	3.2360375	0.5203691
0.602740366	3.2369532	0.51723565
0.605830471	3.2379426	0.51411515
0.60889055	3.2390503	0.5111411
0.61199067	3.2401882	0.50782553
0.615060758	3.2410615	0.50453148
0.618150862	3.2420111	0.50161714
0.621220966	3.2430089	0.49840037
0.62432109	3.2441777	0.495502
0.62738119	3.2451443	0.49177653
0.630471307	3.2457727	0.48871505
0.633571391	3.246805	0.48571297
0.636631495	3.2475048	0.48187324
0.639711599	3.2475341	0.47866272
0.642801722	3.247957	0.47633385
0.645881801	3.2488167	0.47345308
0.648951932	3.2495081	0.47041557
0.65206202	3.2499411	0.4673322
0.655132127	3.250363	0.4647368
0.658222231	3.2511063	0.46212707
0.661272347	3.2516824	0.45904644
0.664362432	3.2520547	0.4564104
0.667472549	3.2526268	0.45383407
0.670542649	3.2532607	0.45116893
0.673632741	3.2538363	0.44845337
0.676682854	3.2543927	0.4458602
0.679762951	3.2550031	0.4432304
0.682873058	3.2556041	0.44050819
0.685933155	3.2563176	0.43789839
0.68902329	3.256493	0.43449646
0.692093368	3.2564951	0.43257184
0.695203479	3.2574854	0.4305167
0.698253571	3.2579486	0.42696855
0.701333679	3.2581208	0.42502602
0.704443803	3.2584943	0.42212369
0.707503907	3.2587972	0.42014795
0.710583994	3.2593411	0.41765803
0.713694097	3.2601383	0.41552884
0.71674419	3.2605995	0.41223141
0.719864306	3.2607419	0.41003742
0.722924398	3.2610237	0.40736571
0.726014529	3.2611768	0.40513759
0.729094617	3.2615427	0.40291981
0.732194724	3.2621604	0.40063065
0.735274822	3.2621098	0.39742819
0.738334949	3.262159	0.39612495
0.741435063	3.2624372	0.39338331
0.744505166	3.263101	0.39224172
0.747595255	3.2635974	0.38872869
0.750675376	3.2639652	0.38742465
0.753735478	3.2643906	0.38401037
0.75681555	3.264273	0.38219272
0.759925649	3.2647308	0.37993277
0.76301577	3.2646408	0.37716797
0.766075882	3.2651148	0.37603652
0.769165981	3.2654276	0.37246005
0.772226084	3.2654043	0.37101531
0.775326196	3.2655078	0.36789324
0.778386299	3.2651275	0.3660093
0.781476416	3.2647451	0.36373306
0.784546484	3.2644301	0.3625208
0.787636616	3.265574	0.36159936
0.790696722	3.2657811	0.35745435
0.793786798	3.2651013	0.3563972
0.796896921	3.2651539	0.35435483
0.799987014	3.2659519	0.35332855
0.803037133	3.2658503	0.34919558
0.806117204	3.2647562	0.34829138
0.80922733	3.2651908	0.3471576
0.812297415	3.2655645	0.34450519
0.815397533	3.2638754	0.34140883
0.818467641	3.2626313	0.34266165
0.821557744	3.2642715	0.34307408
0.824617845	3.2658418	0.34079987
0.827697955	3.2675823	0.33990745
0.830808063	3.2689639	0.33573598
0.833878141	3.2684165	0.33281938
0.836978281	3.2687056	0.33166103
0.840038377	3.2689761	0.32812859
0.843118466	3.2688435	0.32623144
0.846168554	3.2672568	0.321972
0.849298674	3.2659529	0.32304372
0.852338758	3.2665033	0.32111239
0.855448904	3.266478	0.31954829
0.858528977	3.2662959	0.31751174
0.861579098	3.2655064	0.31572357
0.864699212	3.2650369	0.31510625
0.867789282	3.2649115	0.31375779
0.870829398	3.2651699	0.3131678
0.873899512	3.2644324	0.31062465
0.876989614	3.2643585	0.31234633
0.880109706	3.2661594	0.31116458
0.883179849	3.2682804	0.31008074
0.886269903	3.2684063	0.30516936
0.889320031	3.2674995	0.30528751
0.892400153	3.2687254	0.3042498
0.895490238	3.2696496	0.30162485
0.898600363	3.2692748	0.29904207
0.901680426	3.2693817	0.29843855
0.904770584	3.2700651	0.29601351
0.907810667	3.2689283	0.29322553
0.910880752	3.2683923	0.29435396
0.913970864	3.2718759	0.29488651
0.917080996	3.2741116	0.2881549
0.920141068	3.2713351	0.28339104
0.923231187	3.2691746	0.28397539
0.926331264	3.2689769	0.28269213
0.929381375	3.2689763	0.28190206
0.932461527	3.2688371	0.27998261
0.935561598	3.2688043	0.27934521
0.938671691	3.2693007	0.27757847
0.941741796	3.268733	0.2752416
0.944821898	3.2685492	0.27517005
0.947861992	3.2693878	0.27355276
0.950982106	3.2703781	0.27154717
0.954062257	3.2687369	0.26653615
0.958084837	3.2666505	0.26812255
0.982069227	3.2670449	0.2580279
1.011108587	3.2664471	0.24594236
1.050239866	3.2648281	0.22996761
1.078434146	3.2627348	0.21961736
1.110322927	3.2605	0.20973295
1.137113766	3.259686	0.2026127
1.163523243	3.2598575	0.19461068
1.18320956	3.2591412	0.18728371
1.201105734	3.2578341	0.18197009
1.221427872	3.2553361	0.17511903
1.245388761	3.2534577	0.17179084
1.276565419	3.2525797	0.16343058
1.31315275	3.2511263	0.156075
1.338913016	3.2503648	0.14991094
1.366384642	3.2500948	0.1448216
1.392984344	3.2496165	0.1374042
1.425495353	3.248445	0.13061709
1.453325577	3.24706	0.12297858
1.494432372	3.2438567	0.11438996
1.544120347	3.2401378	0.10419314
1.591303846	3.2356417	0.094905278
1.644212642	3.2299894	0.086445342
1.698880579	3.2242112	0.07901521
1.746932913	3.2193995	0.073717427
1.785204804	3.2158357	0.069812757
1.837910179	3.2110812	0.064969582
1.883081013	3.2073557	0.061712867
1.94062203	3.203265	0.057575165
1.997915867	3.1992451	0.053580958
2.054426298	3.1953873	0.050288885
2.101963904	3.1922363	0.047648964
2.156218913	3.1885755	0.045125091
2.199861381	3.1860895	0.044
2.429650062	3.1759146	0.035542688
2.543843658	3.1711057	0.032700097
2.663404256	3.1668313	0.030084847
2.788584262	3.1628179	0.027678756
2.919647745	3.1589811	0.025465097
3.056871156	3.1552575	0.02342848
3.200544168	3.1515854	0.021554744
3.350969721	3.1478924	0.019830864
3.508465264	3.1440746	0.018244855
3.673363166	3.1398963	0.016785689
3.850635168	3.134977	0.015782936
4.027050139	3.1293334	0.015782936
4.210417863	3.1246674	0.019255941
4.415143489	3.1230556	0.023197436
4.508493282	3.1243572	0.024403204
4.628581651	3.1240439	0.020750324
4.853639883	3.1181008	0.019255941
5.061051719	3.112446	0.021014864
5.307138101	3.1066314	0.023493174
5.55028205	3.0994586	0.025316393
5.834224378	3.0846335	0.028301987
6.036399821	3.057423	0.032451552
6.097766921	3.0368797	0.03853364
6.135176231	3.020115	0.05148646
6.17304738	3.003439	0.07167016
6.211389907	2.9882565	0.1041965
6.250211094	2.9841296	0.1562722
6.289520279	3.0128543	0.2279973
6.309361036	3.0485612	0.2610739
6.31932843	3.0734334	0.2727183
6.32932769	3.1008929	0.2792993
6.339357996	3.1296001	0.2799534
6.349421444	3.1581193	0.2745244
6.369642207	3.2038132	0.24847
6.410472586	3.2472883	0.1735233
6.451830807	3.2488695	0.1140417
6.493725472	3.2343962	0.07727957
6.536168809	3.2178435	0.05514067
6.579169224	3.2029603	0.04134531
6.622740586	3.1902302	0.03236473
6.673694358	3.1780608	0.02553225
6.711635711	3.1702199	0.02202557
6.756985335	3.1621682	0.01897125
6.802950851	3.1550242	0.01673966
6.849546405	3.1485927	0.01509159
6.896785039	3.1427125	0.01387127
6.944678605	3.1372549	0.01297455
7.000236256	3.1314251	0.01225585
7.042490974	3.127239	0.01188952
7.092438527	3.1225277	0.01161793
7.143098393	3.1179314	0.01149206
7.194488008	3.1134008	0.0114962
7.246621558	3.1088904	0.01162068
7.299516606	3.1043574	0.01186067
7.353189523	3.0997605	0.01221554
7.407657151	3.0950579	0.01268849
7.468926054	3.089684	0.01335871
7.51905094	3.0851724	0.01402091
7.57601391	3.0798976	0.01490712
7.633845611	3.0743317	0.0159662
7.692567978	3.0684166	0.01722577
7.752199807	3.0620846	0.01872172
7.812763868	3.0552568	0.02050075
7.874282194	3.0478398	0.02262378
7.936775993	3.0397202	0.02517096
8.000270201	3.030737	0.02824888
8.090888148	3.0165435	0.03373257
8.183582447	2.9997936	0.04112998
8.285283969	2.9783143	0.0522597
8.37730883	2.955113	0.06639847
8.467685917	2.9281883	0.08608682
8.554608854	2.897687	0.1134973
8.643333668	2.8623178	0.1552178
8.73128019	2.8261654	0.2188547
8.810869639	2.801629	0.3064274
8.849857048	2.7949255	0.3631365
8.889189112	2.7997208	0.4303857
8.928872349	2.8211754	0.5070167
8.968912781	2.8659931	0.588387
9.009313289	2.939414	0.6648245
9.049940689	3.0408709	0.7217195
9.091216137	3.1607008	0.7443366
9.111925058	3.2256006	0.7396002
9.132728539	3.287066	0.7241882
9.153627232	3.3435915	0.6992224
9.17462179	3.3936212	0.6665531
9.216901153	3.4672725	0.5871451
9.259571991	3.5113863	0.502785
9.30263907	3.5313017	0.4244886
9.337383521	3.5344324	0.3694763
9.37238777	3.5308025	0.3217892
9.392741472	3.525791	0.2974142
9.434280897	3.5144315	0.2544548
9.470016809	3.5022849	0.2237829
9.506023749	3.4894562	0.1977349
9.54230628	3.4764465	0.1755619
9.578867577	3.4636152	0.1566217
9.615710121	3.4511822	0.1403755
9.652835667	3.439284	0.126377
9.6862654	3.4290651	0.1154655
9.727954247	3.4172356	0.1037194
9.765954835	3.4071046	0.09451012
9.804253472	3.397575	0.08642702
9.842852117	3.3886081	0.07930141
9.881756671	3.3801712	0.07299358
9.920969991	3.3722286	0.06738733
9.960495768	3.3647394	0.06238558
10.00033775	3.357608	0.05790694
10.10135126	3.341954	0.04857438
10.2044246	3.3280805	0.04129355
10.41884191	3.3058938	0.03078254
10.58236709	3.2923763	0.02539562
10.73456261	3.2820167	0.02164866
10.8699371	3.2741558	0.01903021
11.00037161	3.2675488	0.01697502
11.18605811	3.2595203	0.01463484
11.37469401	3.2526054	0.01277318
11.54772982	3.2471372	0.01139875
11.69662477	3.2429777	0.01041032
11.84874028	3.2391729	0.009546873
12.00040491	3.2357515	0.008805243
12.25531345	3.2307361	0.007769175
12.52365302	3.2262242	0.006895485
12.7818717	3.2224784	0.006210854
13.00043904	3.2196759	0.005723277
13.33163019	3.2159804	0.005107971
13.62464017	3.2131409	0.004659802
14.00047283	3.2099807	0.004184699
15.00050669	3.2035901	0.003284638
15.49802343	3.2011169	0.002966013
16.0005404	3.1989917	0.002701535
16.5312283	3.1970651	0.002469603
17.00057412	3.1955793	0.002295948
17.58641406	3.193964	0.002111566
18.00060789	3.1929521	0.001998705
18.50510509	3.191846	0.001877166
19.0006416	3.1908736	0.001771988
19.5250695	3.1899501	0.001673411
20.0006755	3.1891914	0.00159354
21.53810759	3.1871725	0.001382963

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: —

B₄C (Boron carbide): all datasets

Larruquert et al. 2012: n,k 0.001738–21.54 µm n,k 0.001738–21.54 µm default

About B4C (Boron carbide)

B₄C, or boron carbide, is a highly hard and lightweight ceramic material known for its diverse range of applications, from abrasives to armor plates. It has a rhombohedral crystal structure and exhibits a high melting point, making it thermally stable. In the realm of optics, boron carbide is most commonly employed as a thin-film coating material, particularly for components that require hardness, thermal stability, and resistance to wear. The material's high refractive index and low absorption in the infrared region also make it suitable for protective optics in high-energy laser systems. In addition to its mechanical strength, boron carbide has the added advantage of neutron absorption capabilities, making it useful for radiation shielding applications. However, it should be noted that the material is brittle, and this can be a limiting factor for certain applications that require mechanical flexibility. Overall, B₄C is a highly specialized material that offers a unique combination of hardness, thermal stability, and optical properties, making it valuable for both scientific research and industrial applications.

More about B4C (Boron carbide) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/B4C/nk/Larruquert.yml
ID: ds_764e41eeda00
API: /v1/datasets/ds_764e41eeda00

Plot