Optical constants

Refractive index of Cr (Chromium)

Rakić et al. 1998: Lorentz-Drude model; n,k 0.248–62.0 µm

Data: tabulated nk
Range: 0.248–61.99 µm
Points: 1000
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 3.15874
Extinction coefficient k: 4.29842

Permittivity ε₁: -8.49877
Permittivity ε₂: 27.1552

Absorption coefficient α: 919257 cm⁻¹
Penetration depth δ = λ/(2πk): 21.7567 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: 6.58462 µm⁻¹

Group index n_g: -0.710379
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

# Cr (Chromium): Rakić et al. 1998: Lorentz-Drude model; n,k 0.248–62.0 µm
cr = ls.fetch_refractiveindex("main", "Cr", "Rakic-LD", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cr.range_nm)  # (247.97, 61992) nm
eps = cr.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_217017e1f3fd/lightsmith"
cr = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(cr.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (cr/rakic-1998-ld).

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

Fit of experimental data from several sources to Lorentz-Drude (LD) model

References

A. D. Rakić, A. B. Djurišic, J. M. Elazar, M. L. Majewski. Optical properties of metallic films for vertical-cavity optoelectronic devices. Appl. Opt. 37, 5271-5283 (1998)
[Calculation script (Python)]

doi:10.1364/ao.37.005271 Optical properties of metallic films for vertical-cavity optoelectronic devices, Applied Optics (1998)

Cite

Aleksandar D. Rakić, Aleksandra B. Djurišić, Jovan M. Elazar and Marian L. Majewski. Optical properties of metallic films for vertical-cavity optoelectronic devices. Applied Optics, 37, 5271 (1998), doi:10.1364/ao.37.005271; [Calculation script (Python)]; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

1000 rows as published

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

Cr (Chromium), Rakić et al. 1998: Lorentz-Drude model; n,k 0.248–62.0 µm: n and k versus wavelength
λ (µm)	n	k
0.24797	0.85637	2.0847
0.24934	0.86098	2.1028
0.25072	0.86575	2.1208
0.25211	0.87067	2.1388
0.25351	0.87575	2.1567
0.25492	0.88097	2.1746
0.25633	0.88634	2.1925
0.25775	0.89186	2.2104
0.25918	0.89752	2.2282
0.26061	0.90332	2.246
0.26206	0.90926	2.2638
0.26351	0.91535	2.2816
0.26497	0.92157	2.2993
0.26644	0.92793	2.317
0.26792	0.93443	2.3347
0.2694	0.94106	2.3523
0.2709	0.94783	2.37
0.2724	0.95474	2.3876
0.27391	0.96177	2.4052
0.27542	0.96894	2.4228
0.27695	0.97625	2.4403
0.27849	0.98368	2.4579
0.28003	0.99125	2.4754
0.28158	0.99895	2.4929
0.28314	1.0068	2.5104
0.28471	1.0147	2.5279
0.28629	1.0228	2.5454
0.28788	1.0311	2.5628
0.28947	1.0394	2.5803
0.29108	1.0479	2.5977
0.29269	1.0565	2.6151
0.29431	1.0653	2.6325
0.29594	1.0741	2.6499
0.29758	1.0831	2.6673
0.29923	1.0923	2.6846
0.30089	1.1015	2.7019
0.30256	1.1109	2.7193
0.30423	1.1205	2.7366
0.30592	1.1301	2.7539
0.30762	1.1399	2.7711
0.30932	1.1499	2.7884
0.31104	1.1599	2.8056
0.31276	1.1701	2.8229
0.31449	1.1804	2.8401
0.31624	1.1909	2.8573
0.31799	1.2015	2.8744
0.31975	1.2122	2.8916
0.32152	1.2231	2.9087
0.32331	1.2341	2.9258
0.3251	1.2452	2.9429
0.3269	1.2565	2.96
0.32871	1.2679	2.977
0.33053	1.2794	2.994
0.33236	1.2911	3.011
0.33421	1.3029	3.028
0.33606	1.3149	3.045
0.33792	1.327	3.0619
0.33979	1.3392	3.0788
0.34168	1.3515	3.0956
0.34357	1.364	3.1125
0.34548	1.3767	3.1293
0.34739	1.3895	3.146
0.34932	1.4024	3.1627
0.35125	1.4154	3.1794
0.3532	1.4287	3.1961
0.35516	1.442	3.2127
0.35712	1.4555	3.2293
0.3591	1.4691	3.2458
0.36109	1.4829	3.2623
0.36309	1.4968	3.2788
0.36511	1.5108	3.2952
0.36713	1.525	3.3115
0.36917	1.5393	3.3278
0.37121	1.5538	3.3441
0.37327	1.5684	3.3603
0.37534	1.5832	3.3764
0.37742	1.5981	3.3925
0.37951	1.6132	3.4085
0.38161	1.6283	3.4245
0.38373	1.6437	3.4404
0.38585	1.6591	3.4562
0.38799	1.6748	3.472
0.39014	1.6905	3.4877
0.39231	1.7064	3.5034
0.39448	1.7225	3.5189
0.39667	1.7386	3.5344
0.39886	1.755	3.5498
0.40108	1.7714	3.5652
0.4033	1.788	3.5804
0.40553	1.8048	3.5956
0.40778	1.8216	3.6107
0.41004	1.8387	3.6256
0.41231	1.8558	3.6405
0.4146	1.8731	3.6554
0.4169	1.8905	3.6701
0.41921	1.9081	3.6847
0.42153	1.9258	3.6992
0.42387	1.9436	3.7136
0.42622	1.9616	3.7279
0.42858	1.9797	3.7421
0.43095	1.9979	3.7562
0.43334	2.0163	3.7702
0.43574	2.0347	3.784
0.43816	2.0533	3.7978
0.44059	2.0721	3.8114
0.44303	2.0909	3.8249
0.44548	2.1099	3.8383
0.44795	2.129	3.8515
0.45044	2.1482	3.8646
0.45293	2.1676	3.8776
0.45544	2.187	3.8905
0.45797	2.2066	3.9032
0.46051	2.2262	3.9157
0.46306	2.246	3.9282
0.46562	2.2659	3.9404
0.4682	2.2859	3.9526
0.4708	2.306	3.9645
0.47341	2.3262	3.9764
0.47603	2.3465	3.988
0.47867	2.3668	3.9996
0.48132	2.3873	4.0109
0.48399	2.4079	4.0221
0.48667	2.4285	4.0331
0.48937	2.4493	4.044
0.49208	2.4701	4.0547
0.49481	2.491	4.0652
0.49755	2.5119	4.0756
0.50031	2.533	4.0857
0.50308	2.5541	4.0957
0.50587	2.5752	4.1055
0.50868	2.5964	4.1152
0.51149	2.6177	4.1246
0.51433	2.6391	4.1339
0.51718	2.6605	4.143
0.52005	2.6819	4.1519
0.52293	2.7034	4.1606
0.52583	2.7249	4.1691
0.52874	2.7464	4.1774
0.53167	2.768	4.1856
0.53462	2.7896	4.1935
0.53758	2.8112	4.2012
0.54056	2.8329	4.2088
0.54356	2.8545	4.2161
0.54657	2.8762	4.2233
0.5496	2.8979	4.2302
0.55264	2.9196	4.237
0.55571	2.9412	4.2435
0.55879	2.9629	4.2499
0.56188	2.9845	4.256
0.565	3.0062	4.262
0.56813	3.0278	4.2677
0.57128	3.0494	4.2733
0.57444	3.0709	4.2786
0.57763	3.0924	4.2838
0.58083	3.1139	4.2887
0.58405	3.1353	4.2935
0.58729	3.1567	4.298
0.59054	3.1781	4.3024
0.59381	3.1993	4.3065
0.5971	3.2205	4.3105
0.60041	3.2417	4.3143
0.60374	3.2627	4.3178
0.60709	3.2837	4.3212
0.61045	3.3046	4.3244
0.61384	3.3254	4.3274
0.61724	3.3462	4.3302
0.62066	3.3668	4.3328
0.6241	3.3873	4.3352
0.62756	3.4078	4.3375
0.63104	3.4281	4.3395
0.63453	3.4483	4.3414
0.63805	3.4684	4.3431
0.64159	3.4883	4.3447
0.64514	3.5081	4.346
0.64872	3.5278	4.3472
0.65231	3.5474	4.3483
0.65593	3.5668	4.3491
0.65956	3.5861	4.3499
0.66322	3.6052	4.3504
0.66689	3.6242	4.3508
0.67059	3.643	4.3511
0.67431	3.6617	4.3512
0.67804	3.6802	4.3511
0.6818	3.6985	4.3509
0.68558	3.7167	4.3506
0.68938	3.7347	4.3502
0.6932	3.7525	4.3496
0.69704	3.7702	4.3489
0.70091	3.7876	4.3481
0.70479	3.8049	4.3471
0.7087	3.8219	4.3461
0.71263	3.8388	4.3449
0.71657	3.8555	4.3436
0.72055	3.872	4.3423
0.72454	3.8883	4.3408
0.72856	3.9044	4.3392
0.73259	3.9203	4.3376
0.73665	3.9359	4.3359
0.74074	3.9514	4.3341
0.74484	3.9667	4.3322
0.74897	3.9817	4.3302
0.75312	3.9965	4.3282
0.75729	4.0111	4.3261
0.76149	4.0255	4.324
0.76571	4.0397	4.3218
0.76996	4.0537	4.3196
0.77422	4.0674	4.3173
0.77851	4.0809	4.315
0.78283	4.0942	4.3126
0.78717	4.1072	4.3102
0.79153	4.12	4.3078
0.79592	4.1326	4.3054
0.80033	4.145	4.3029
0.80476	4.1571	4.3005
0.80922	4.169	4.298
0.81371	4.1807	4.2956
0.81822	4.1922	4.2931
0.82275	4.2034	4.2907
0.82731	4.2144	4.2882
0.8319	4.2251	4.2858
0.83651	4.2356	4.2834
0.84115	4.2459	4.281
0.84581	4.256	4.2787
0.8505	4.2658	4.2764
0.85521	4.2754	4.2741
0.85995	4.2848	4.2719
0.86472	4.2939	4.2697
0.86951	4.3028	4.2676
0.87433	4.3115	4.2655
0.87917	4.3199	4.2635
0.88405	4.3281	4.2615
0.88895	4.3361	4.2596
0.89387	4.3439	4.2578
0.89883	4.3514	4.2561
0.90381	4.3588	4.2544
0.90882	4.3659	4.2529
0.91385	4.3727	4.2514
0.91892	4.3794	4.25
0.92401	4.3858	4.2487
0.92913	4.392	4.2475
0.93428	4.398	4.2464
0.93946	4.4038	4.2454
0.94467	4.4094	4.2445
0.9499	4.4148	4.2438
0.95517	4.4199	4.2431
0.96046	4.4249	4.2426
0.96578	4.4296	4.2422
0.97114	4.4341	4.2419
0.97652	4.4384	4.2418
0.98193	4.4426	4.2417
0.98737	4.4465	4.2419
0.99285	4.4502	4.2421
0.99835	4.4537	4.2425
1.0039	4.457	4.2431
1.0094	4.4602	4.2438
1.015	4.4631	4.2446
1.0207	4.4658	4.2456
1.0263	4.4684	4.2468
1.032	4.4708	4.2481
1.0377	4.473	4.2496
1.0435	4.475	4.2513
1.0493	4.4768	4.2531
1.0551	4.4784	4.2551
1.0609	4.4799	4.2572
1.0668	4.4812	4.2596
1.0727	4.4823	4.2621
1.0787	4.4833	4.2648
1.0846	4.484	4.2677
1.0907	4.4846	4.2707
1.0967	4.4851	4.274
1.1028	4.4854	4.2774
1.1089	4.4855	4.2811
1.115	4.4855	4.2849
1.1212	4.4853	4.2889
1.1274	4.4849	4.2932
1.1337	4.4844	4.2976
1.14	4.4838	4.3022
1.1463	4.483	4.307
1.1526	4.482	4.3121
1.159	4.4809	4.3173
1.1654	4.4797	4.3228
1.1719	4.4783	4.3285
1.1784	4.4768	4.3344
1.1849	4.4752	4.3405
1.1915	4.4734	4.3468
1.1981	4.4715	4.3533
1.2047	4.4694	4.3601
1.2114	4.4673	4.3671
1.2181	4.465	4.3743
1.2249	4.4625	4.3817
1.2317	4.46	4.3894
1.2385	4.4573	4.3973
1.2454	4.4546	4.4054
1.2523	4.4517	4.4137
1.2592	4.4487	4.4223
1.2662	4.4455	4.4311
1.2732	4.4423	4.4402
1.2803	4.439	4.4495
1.2874	4.4355	4.459
1.2945	4.432	4.4688
1.3017	4.4284	4.4788
1.3089	4.4246	4.489
1.3161	4.4208	4.4995
1.3234	4.4168	4.5103
1.3308	4.4128	4.5213
1.3381	4.4087	4.5325
1.3456	4.4045	4.544
1.353	4.4002	4.5557
1.3605	4.3958	4.5677
1.368	4.3913	4.5799
1.3756	4.3868	4.5924
1.3833	4.3822	4.6052
1.3909	4.3774	4.6181
1.3986	4.3727	4.6314
1.4064	4.3678	4.6449
1.4142	4.3629	4.6587
1.422	4.3579	4.6727
1.4299	4.3528	4.687
1.4378	4.3477	4.7015
1.4458	4.3425	4.7163
1.4538	4.3372	4.7313
1.4619	4.3319	4.7467
1.47	4.3265	4.7623
1.4781	4.3211	4.7781
1.4863	4.3156	4.7942
1.4945	4.31	4.8106
1.5028	4.3044	4.8272
1.5112	4.2988	4.8441
1.5195	4.293	4.8613
1.5279	4.2873	4.8788
1.5364	4.2815	4.8965
1.5449	4.2756	4.9145
1.5535	4.2698	4.9327
1.5621	4.2638	4.9512
1.5708	4.2579	4.97
1.5795	4.2519	4.9891
1.5882	4.2458	5.0084
1.597	4.2397	5.0281
1.6059	4.2336	5.0479
1.6148	4.2275	5.0681
1.6237	4.2213	5.0885
1.6327	4.2151	5.1092
1.6418	4.2089	5.1302
1.6509	4.2026	5.1515
1.66	4.1964	5.173
1.6692	4.1901	5.1948
1.6785	4.1837	5.2169
1.6878	4.1774	5.2393
1.6971	4.171	5.2619
1.7065	4.1646	5.2849
1.716	4.1582	5.3081
1.7255	4.1518	5.3315
1.7351	4.1454	5.3553
1.7447	4.139	5.3794
1.7544	4.1325	5.4037
1.7641	4.1261	5.4283
1.7739	4.1196	5.4532
1.7837	4.1131	5.4784
1.7936	4.1066	5.5038
1.8035	4.1001	5.5295
1.8135	4.0937	5.5556
1.8236	4.0872	5.5819
1.8337	4.0807	5.6085
1.8438	4.0742	5.6353
1.854	4.0677	5.6625
1.8643	4.0612	5.69
1.8747	4.0547	5.7177
1.885	4.0482	5.7457
1.8955	4.0417	5.774
1.906	4.0352	5.8026
1.9166	4.0288	5.8315
1.9272	4.0223	5.8607
1.9379	4.0159	5.8901
1.9486	4.0094	5.9199
1.9594	4.003	5.9499
1.9703	3.9966	5.9803
1.9812	3.9901	6.0109
1.9922	3.9838	6.0418
2.0032	3.9774	6.073
2.0143	3.971	6.1045
2.0255	3.9647	6.1363
2.0367	3.9583	6.1684
2.048	3.952	6.2008
2.0593	3.9457	6.2335
2.0707	3.9394	6.2665
2.0822	3.9332	6.2998
2.0938	3.9269	6.3333
2.1054	3.9207	6.3672
2.117	3.9145	6.4014
2.1288	3.9083	6.4358
2.1406	3.9022	6.4706
2.1524	3.8961	6.5057
2.1644	3.89	6.541
2.1764	3.8839	6.5767
2.1884	3.8778	6.6127
2.2005	3.8718	6.6489
2.2127	3.8658	6.6855
2.225	3.8599	6.7224
2.2373	3.8539	6.7596
2.2497	3.848	6.7971
2.2622	3.8422	6.8349
2.2747	3.8363	6.873
2.2874	3.8305	6.9114
2.3	3.8247	6.9501
2.3128	3.819	6.9892
2.3256	3.8133	7.0285
2.3385	3.8076	7.0682
2.3514	3.802	7.1082
2.3645	3.7964	7.1484
2.3776	3.7908	7.1891
2.3908	3.7853	7.23
2.404	3.7798	7.2712
2.4173	3.7743	7.3128
2.4307	3.7689	7.3546
2.4442	3.7635	7.3968
2.4577	3.7582	7.4394
2.4714	3.7529	7.4822
2.4851	3.7477	7.5254
2.4988	3.7424	7.5688
2.5127	3.7373	7.6126
2.5266	3.7322	7.6568
2.5406	3.7271	7.7013
2.5547	3.7221	7.746
2.5689	3.7171	7.7912
2.5831	3.7121	7.8366
2.5974	3.7073	7.8824
2.6118	3.7024	7.9285
2.6263	3.6976	7.975
2.6408	3.6929	8.0218
2.6555	3.6882	8.0689
2.6702	3.6835	8.1164
2.685	3.679	8.1642
2.6999	3.6744	8.2123
2.7148	3.6699	8.2608
2.7299	3.6655	8.3097
2.745	3.6611	8.3589
2.7602	3.6568	8.4084
2.7755	3.6526	8.4583
2.7909	3.6483	8.5085
2.8064	3.6442	8.5591
2.8219	3.6401	8.61
2.8376	3.6361	8.6613
2.8533	3.6321	8.7129
2.8691	3.6282	8.7649
2.885	3.6244	8.8173
2.901	3.6206	8.87
2.9171	3.6169	8.923
2.9332	3.6132	8.9765
2.9495	3.6096	9.0303
2.9658	3.6061	9.0844
2.9823	3.6027	9.139
2.9988	3.5993	9.1939
3.0154	3.596	9.2491
3.0321	3.5927	9.3048
3.049	3.5896	9.3608
3.0659	3.5865	9.4172
3.0828	3.5835	9.4739
3.0999	3.5805	9.5311
3.1171	3.5776	9.5886
3.1344	3.5749	9.6465
3.1518	3.5721	9.7048
3.1692	3.5695	9.7634
3.1868	3.5669	9.8225
3.2045	3.5645	9.8819
3.2222	3.5621	9.9418
3.2401	3.5598	10.002
3.258	3.5576	10.063
3.2761	3.5554	10.124
3.2942	3.5534	10.185
3.3125	3.5514	10.247
3.3309	3.5495	10.309
3.3493	3.5478	10.372
3.3679	3.5461	10.435
3.3865	3.5445	10.498
3.4053	3.543	10.562
3.4242	3.5416	10.626
3.4432	3.5403	10.691
3.4623	3.539	10.756
3.4814	3.5379	10.821
3.5007	3.5369	10.887
3.5201	3.536	10.953
3.5396	3.5352	11.02
3.5593	3.5345	11.087
3.579	3.5339	11.155
3.5988	3.5335	11.222
3.6188	3.5331	11.291
3.6388	3.5328	11.36
3.659	3.5327	11.429
3.6793	3.5326	11.499
3.6997	3.5327	11.569
3.7202	3.5329	11.639
3.7408	3.5332	11.71
3.7615	3.5337	11.781
3.7824	3.5342	11.853
3.8033	3.5349	11.926
3.8244	3.5357	11.998
3.8456	3.5367	12.071
3.8669	3.5377	12.145
3.8884	3.5389	12.219
3.9099	3.5402	12.294
3.9316	3.5417	12.369
3.9534	3.5433	12.444
3.9753	3.545	12.52
3.9973	3.5468	12.596
4.0195	3.5488	12.673
4.0417	3.551	12.75
4.0641	3.5533	12.828
4.0867	3.5557	12.906
4.1093	3.5583	12.984
4.1321	3.561	13.063
4.155	3.5639	13.143
4.178	3.5669	13.223
4.2012	3.5701	13.303
4.2245	3.5734	13.384
4.2479	3.5769	13.466
4.2714	3.5805	13.548
4.2951	3.5843	13.63
4.3189	3.5883	13.713
4.3428	3.5924	13.796
4.3669	3.5967	13.88
4.3911	3.6012	13.964
4.4154	3.6058	14.049
4.4399	3.6106	14.134
4.4645	3.6156	14.22
4.4893	3.6208	14.306
4.5141	3.6261	14.393
4.5392	3.6316	14.48
4.5643	3.6373	14.568
4.5896	3.6432	14.656
4.615	3.6493	14.745
4.6406	3.6555	14.834
4.6663	3.662	14.924
4.6922	3.6686	15.014
4.7182	3.6755	15.105
4.7444	3.6825	15.196
4.7707	3.6897	15.288
4.7971	3.6971	15.38
4.8237	3.7048	15.473
4.8504	3.7126	15.567
4.8773	3.7206	15.66
4.9043	3.7289	15.755
4.9315	3.7373	15.85
4.9588	3.746	15.945
4.9863	3.7549	16.041
5.014	3.764	16.137
5.0418	3.7733	16.234
5.0697	3.7829	16.332
5.0978	3.7926	16.43
5.126	3.8026	16.528
5.1545	3.8128	16.627
5.183	3.8233	16.727
5.2118	3.834	16.827
5.2406	3.8449	16.928
5.2697	3.8561	17.029
5.2989	3.8675	17.131
5.3283	3.8791	17.233
5.3578	3.891	17.336
5.3875	3.9032	17.439
5.4173	3.9155	17.543
5.4474	3.9282	17.648
5.4776	3.9411	17.753
5.5079	3.9542	17.859
5.5384	3.9676	17.965
5.5691	3.9813	18.072
5.6	3.9952	18.179
5.631	4.0094	18.287
5.6622	4.0239	18.395
5.6936	4.0387	18.504
5.7252	4.0537	18.614
5.7569	4.069	18.724
5.7888	4.0846	18.834
5.8209	4.1004	18.946
5.8532	4.1166	19.057
5.8856	4.133	19.17
5.9182	4.1497	19.283
5.951	4.1667	19.396
5.984	4.184	19.51
6.0172	4.2016	19.625
6.0505	4.2195	19.74
6.0841	4.2378	19.856
6.1178	4.2563	19.973
6.1517	4.2751	20.09
6.1858	4.2942	20.207
6.2201	4.3137	20.326
6.2545	4.3335	20.444
6.2892	4.3536	20.564
6.3241	4.374	20.684
6.3591	4.3947	20.804
6.3944	4.4158	20.926
6.4298	4.4372	21.047
6.4654	4.4589	21.17
6.5013	4.481	21.293
6.5373	4.5034	21.416
6.5735	4.5261	21.54
6.61	4.5492	21.665
6.6466	4.5727	21.791
6.6834	4.5965	21.917
6.7205	4.6206	22.043
6.7577	4.6452	22.171
6.7952	4.67	22.298
6.8328	4.6953	22.427
6.8707	4.7209	22.556
6.9088	4.7468	22.686
6.9471	4.7732	22.816
6.9856	4.7999	22.947
7.0243	4.827	23.078
7.0632	4.8545	23.211
7.1024	4.8824	23.343
7.1417	4.9107	23.477
7.1813	4.9393	23.611
7.2211	4.9684	23.746
7.2611	4.9978	23.881
7.3014	5.0277	24.017
7.3418	5.0579	24.153
7.3825	5.0886	24.291
7.4234	5.1197	24.428
7.4646	5.1512	24.567
7.506	5.1831	24.706
7.5476	5.2154	24.846
7.5894	5.2482	24.986
7.6315	5.2814	25.127
7.6738	5.315	25.269
7.7163	5.3491	25.411
7.759	5.3836	25.554
7.802	5.4185	25.698
7.8453	5.4539	25.842
7.8888	5.4897	25.987
7.9325	5.526	26.133
7.9765	5.5628	26.279
8.0207	5.6	26.426
8.0651	5.6377	26.573
8.1098	5.6758	26.722
8.1548	5.7144	26.87
8.2	5.7535	27.02
8.2454	5.7931	27.17
8.2911	5.8331	27.321
8.3371	5.8737	27.472
8.3833	5.9147	27.625
8.4297	5.9562	27.777
8.4764	5.9983	27.931
8.5234	6.0408	28.085
8.5707	6.0838	28.24
8.6182	6.1273	28.395
8.6659	6.1714	28.551
8.714	6.216	28.708
8.7623	6.2611	28.866
8.8108	6.3067	29.024
8.8596	6.3528	29.183
8.9088	6.3995	29.342
8.9581	6.4467	29.502
9.0078	6.4945	29.663
9.0577	6.5428	29.825
9.1079	6.5916	29.987
9.1584	6.641	30.15
9.2091	6.691	30.313
9.2602	6.7415	30.477
9.3115	6.7926	30.642
9.3631	6.8442	30.808
9.415	6.8965	30.974
9.4672	6.9493	31.141
9.5196	7.0027	31.309
9.5724	7.0566	31.477
9.6255	7.1112	31.646
9.6788	7.1664	31.815
9.7325	7.2221	31.986
9.7864	7.2785	32.157
9.8406	7.3354	32.328
9.8952	7.393	32.501
9.95	7.4512	32.674
10.005	7.51	32.848
10.061	7.5695	33.022
10.116	7.6295	33.197
10.172	7.6902	33.373
10.229	7.7516	33.549
10.286	7.8135	33.726
10.343	7.8762	33.904
10.4	7.9394	34.083
10.457	8.0034	34.262
10.515	8.0679	34.442
10.574	8.1332	34.622
10.632	8.1991	34.803
10.691	8.2657	34.985
10.75	8.333	35.168
10.81	8.4009	35.351
10.87	8.4696	35.535
10.93	8.5389	35.72
10.991	8.6089	35.905
11.052	8.6796	36.091
11.113	8.751	36.278
11.175	8.8232	36.465
11.237	8.896	36.653
11.299	8.9696	36.842
11.361	9.0439	37.031
11.424	9.1189	37.221
11.488	9.1946	37.412
11.551	9.2711	37.604
11.615	9.3483	37.796
11.68	9.4263	37.989
11.744	9.505	38.182
11.81	9.5845	38.376
11.875	9.6647	38.571
11.941	9.7457	38.766
12.007	9.8274	38.963
12.074	9.9099	39.159
12.14	9.9932	39.357
12.208	10.077	39.555
12.275	10.162	39.754
12.343	10.248	39.953
12.412	10.334	40.154
12.481	10.422	40.354
12.55	10.51	40.556
12.619	10.598	40.758
12.689	10.688	40.961
12.76	10.779	41.164
12.83	10.87	41.368
12.901	10.962	41.573
12.973	11.055	41.778
13.045	11.149	41.985
13.117	11.244	42.191
13.19	11.339	42.399
13.263	11.435	42.607
13.336	11.533	42.815
13.41	11.631	43.025
13.485	11.73	43.234
13.559	11.829	43.445
13.635	11.93	43.656
13.71	12.031	43.868
13.786	12.134	44.081
13.863	12.237	44.294
13.939	12.341	44.507
14.017	12.446	44.722
14.094	12.552	44.937
14.172	12.659	45.152
14.251	12.767	45.369
14.33	12.876	45.586
14.409	12.985	45.803
14.489	13.096	46.021
14.57	13.207	46.24
14.65	13.32	46.459
14.732	13.433	46.679
14.813	13.547	46.899
14.895	13.662	47.121
14.978	13.778	47.342
15.061	13.895	47.565
15.144	14.013	47.787
15.228	14.132	48.011
15.313	14.252	48.235
15.398	14.373	48.46
15.483	14.495	48.685
15.569	14.618	48.911
15.655	14.742	49.137
15.742	14.866	49.364
15.829	14.992	49.591
15.917	15.119	49.82
16.005	15.246	50.048
16.094	15.375	50.277
16.183	15.505	50.507
16.272	15.636	50.737
16.363	15.767	50.968
16.453	15.9	51.2
16.545	16.034	51.432
16.636	16.168	51.664
16.728	16.304	51.897
16.821	16.441	52.131
16.914	16.579	52.365
17.008	16.717	52.599
17.102	16.857	52.834
17.197	16.998	53.07
17.292	17.14	53.306
17.388	17.283	53.543
17.485	17.427	53.78
17.582	17.572	54.018
17.679	17.718	54.256
17.777	17.865	54.494
17.876	18.013	54.733
17.975	18.162	54.973
18.074	18.312	55.213
18.174	18.464	55.454
18.275	18.616	55.695
18.376	18.77	55.936
18.478	18.924	56.178
18.581	19.08	56.421
18.684	19.236	56.664
18.787	19.394	56.907
18.891	19.553	57.151
18.996	19.712	57.395
19.101	19.873	57.64
19.207	20.035	57.885
19.314	20.198	58.13
19.421	20.363	58.376
19.528	20.528	58.623
19.637	20.694	58.87
19.745	20.862	59.117
19.855	21.03	59.365
19.965	21.2	59.613
20.076	21.37	59.861
20.187	21.542	60.11
20.299	21.715	60.359
20.411	21.889	60.609
20.524	22.064	60.859
20.638	22.24	61.109
20.752	22.418	61.36
20.867	22.596	61.611
20.983	22.775	61.863
21.099	22.956	62.115
21.216	23.138	62.367
21.334	23.32	62.62
21.452	23.504	62.873
21.571	23.689	63.126
21.691	23.875	63.38
21.811	24.063	63.634
21.932	24.251	63.888
22.053	24.44	64.143
22.175	24.631	64.398
22.298	24.822	64.653
22.422	25.015	64.909
22.546	25.209	65.165
22.671	25.404	65.421
22.797	25.6	65.677
22.923	25.797	65.934
23.05	25.995	66.191
23.178	26.195	66.449
23.306	26.395	66.707
23.436	26.597	66.965
23.566	26.799	67.223
23.696	27.003	67.482
23.827	27.208	67.74
23.96	27.414	67.999
24.092	27.621	68.259
24.226	27.829	68.518
24.36	28.038	68.778
24.495	28.249	69.039
24.631	28.46	69.299
24.767	28.673	69.56
24.905	28.887	69.82
25.043	29.101	70.082
25.181	29.317	70.343
25.321	29.534	70.605
25.461	29.752	70.866
25.602	29.971	71.128
25.744	30.191	71.391
25.887	30.413	71.653
26.031	30.635	71.916
26.175	30.858	72.179
26.32	31.083	72.442
26.466	31.309	72.705
26.612	31.535	72.969
26.76	31.763	73.232
26.908	31.992	73.496
27.057	32.222	73.76
27.207	32.453	74.024
27.358	32.685	74.289
27.51	32.918	74.553
27.662	33.152	74.818
27.816	33.387	75.083
27.97	33.624	75.348
28.125	33.861	75.614
28.281	34.099	75.879
28.437	34.339	76.145
28.595	34.579	76.411
28.753	34.821	76.677
28.913	35.063	76.943
29.073	35.307	77.209
29.234	35.552	77.475
29.396	35.797	77.742
29.559	36.044	78.009
29.723	36.292	78.276
29.888	36.54	78.543
30.053	36.79	78.81
30.22	37.041	79.077
30.387	37.293	79.344
30.556	37.546	79.612
30.725	37.8	79.88
30.895	38.054	80.147
31.067	38.31	80.415
31.239	38.567	80.683
31.412	38.825	80.952
31.586	39.084	81.22
31.761	39.344	81.488
31.937	39.604	81.757
32.114	39.866	82.026
32.292	40.129	82.294
32.471	40.393	82.563
32.651	40.658	82.832
32.832	40.923	83.102
33.014	41.19	83.371
33.197	41.458	83.64
33.381	41.726	83.91
33.566	41.996	84.179
33.752	42.267	84.449
33.939	42.538	84.719
34.127	42.811	84.989
34.316	43.084	85.259
34.506	43.358	85.529
34.698	43.634	85.799
34.89	43.91	86.07
35.083	44.187	86.34
35.278	44.465	86.611
35.473	44.744	86.882
35.67	45.024	87.152
35.868	45.305	87.423
36.066	45.586	87.694
36.266	45.869	87.966
36.467	46.153	88.237
36.669	46.437	88.508
36.873	46.723	88.78
37.077	47.009	89.051
37.282	47.296	89.323
37.489	47.584	89.595
37.697	47.873	89.867
37.906	48.163	90.139
38.116	48.454	90.411
38.327	48.745	90.683
38.54	49.038	90.956
38.753	49.331	91.228
38.968	49.625	91.501
39.184	49.92	91.773
39.401	50.216	92.046
39.619	50.513	92.319
39.839	50.811	92.592
40.06	51.109	92.866
40.282	51.409	93.139
40.505	51.709	93.412
40.73	52.01	93.686
40.955	52.312	93.96
41.182	52.614	94.234
41.411	52.918	94.508
41.64	53.222	94.782
41.871	53.527	95.056
42.103	53.833	95.331
42.336	54.14	95.605
42.571	54.448	95.88
42.807	54.756	96.155
43.044	55.066	96.43
43.283	55.376	96.705
43.523	55.687	96.98
43.764	55.998	97.256
44.006	56.311	97.532
44.25	56.624	97.807
44.495	56.938	98.083
44.742	57.253	98.36
44.99	57.569	98.636
45.239	57.885	98.912
45.49	58.202	99.189
45.742	58.52	99.466
45.996	58.839	99.743
46.251	59.159	100.02
46.507	59.479	100.3
46.765	59.8	100.58
47.024	60.122	100.85
47.285	60.444	101.13
47.547	60.768	101.41
47.81	61.092	101.69
48.075	61.417	101.97
48.342	61.742	102.24
48.61	62.069	102.52
48.879	62.396	102.8
49.15	62.724	103.08
49.422	63.053	103.36
49.696	63.382	103.64
49.972	63.712	103.92
50.249	64.043	104.2
50.527	64.375	104.48
50.807	64.707	104.76
51.089	65.04	105.04
51.372	65.374	105.33
51.657	65.708	105.61
51.943	66.044	105.89
52.231	66.38	106.17
52.52	66.716	106.45
52.811	67.054	106.74
53.104	67.392	107.02
53.398	67.731	107.3
53.694	68.071	107.59
53.992	68.411	107.87
54.291	68.752	108.15
54.592	69.094	108.44
54.894	69.436	108.72
55.199	69.78	109.01
55.505	70.123	109.29
55.812	70.468	109.58
56.122	70.813	109.86
56.433	71.16	110.15
56.745	71.506	110.44
57.06	71.854	110.72
57.376	72.202	111.01
57.694	72.551	111.3
58.014	72.9	111.58
58.335	73.251	111.87
58.659	73.602	112.16
58.984	73.953	112.45
59.311	74.306	112.74
59.639	74.659	113.03
59.97	75.013	113.32
60.302	75.367	113.61
60.637	75.722	113.9
60.973	76.078	114.19
61.311	76.435	114.48
61.65	76.792	114.77
61.992	77.15	115.06

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: —

Cr (Chromium): all datasets

Experimental data

Models and simulations

About Cr (Chromium)

Chromium (Cr) is a hard, brittle, silver-gray metal that belongs to the transition metals group in the periodic table. It has a body-centered cubic structure and exhibits various oxidation states, but Cr(III) and Cr(VI) are the most stable and commonly observed. Chromium is best known for its role in the production of stainless steel, where it provides corrosion resistance, and in chrome plating for decorative and protective finishes. It is also used in various other alloys to improve hardness and resistance to wear. In specialized applications, chromium compounds are employed as catalysts, pigments, and tanning agents. Of particular note are its magnetic properties, which are exploited in data storage and other magnetic applications. On the environmental front, certain chromium compounds, particularly those in the hexavalent state (Cr(VI)), are highly toxic and carcinogenic, requiring strict handling and disposal protocols. Overall, chromium is an industrially significant metal with a wide range of applications, but its use is tempered by environmental and health considerations.

More about Cr (Chromium) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/Cr/nk/Rakic-LD.yml
ID: ds_217017e1f3fd
API: /v1/datasets/ds_217017e1f3fd

Plot