Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.71
Extinction coefficient k: 0.56

Permittivity ε₁: 2.6105
Permittivity ε₂: 1.9152

Absorption coefficient α: 119761 cm⁻¹
Penetration depth δ = λ/(2πk): 166.999 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: 0 µm⁻¹

Group index n_g: 1.71
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

# C (Carbon, diamond, graphite, graphene, carbon nanotubes): Song et al. 2020: CNT film, HiPco grown; n,k 0.370–1.69 µm
c = ls.fetch_refractiveindex("main", "C", "Song-HiPco", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c.range_nm)  # (370.96, 1687.24) nm
eps = c.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_406caa1f74fc/lightsmith"
c = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (c/song-2020-hipco).

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

Carbon nanotubes. High-pressure carbon monoxide (HiPco) grown semiconducting single wall carbon nanotube (s-SWCNT) film on Si/SiO₂ substrate.

Conditions

substrate: Si/SIO2

References

B. Song, F. Liu, H. Wang, J. Miao, Y. Chen, P. Kumar, H. Zhang, X. Liu, H. Gu, E. A. Stach, X. Liang, S. Liu, Z. Fakhraai, D. Jariwala. Giant gate-tunability of complex refractive index in semiconducting carbon nanotubes. ACS Photonics 7, 2896-2905 (2020) (See Supporting information)

doi:10.1021/acsphotonics.0c01220 Giant Gate-Tunability of Complex Refractive Index in Semiconducting Carbon Nanotubes, ACS Photonics (2020)

Cite

Baokun Song et al.. Giant Gate-Tunability of Complex Refractive Index in Semiconducting Carbon Nanotubes. ACS Photonics, 7, 2896-2905 (2020), doi:10.1021/acsphotonics.0c01220; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

594 rows as published

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

C (Carbon, diamond, graphite, graphene, carbon nanotubes), Song et al. 2020: CNT film, HiPco grown; n,k 0.370–1.69 µm: n and k versus wavelength
λ (µm)	n	k
0.37096	2.24	0.83
0.37254	2.24	0.8
0.37412	2.25	0.78
0.37571	2.26	0.76
0.37729	2.26	0.73
0.37887	2.26	0.71
0.38045	2.27	0.69
0.38204	2.27	0.67
0.38362	2.27	0.65
0.3852	2.27	0.63
0.38679	2.27	0.62
0.38837	2.26	0.6
0.38995	2.26	0.58
0.39154	2.26	0.57
0.39312	2.25	0.55
0.3947	2.25	0.53
0.39629	2.25	0.52
0.39787	2.24	0.51
0.39946	2.24	0.49
0.40104	2.23	0.48
0.40262	2.22	0.47
0.40421	2.22	0.46
0.40579	2.21	0.45
0.40738	2.21	0.44
0.40896	2.2	0.43
0.41055	2.19	0.42
0.41213	2.19	0.41
0.41372	2.18	0.4
0.4153	2.18	0.39
0.41689	2.17	0.38
0.41848	2.16	0.38
0.42006	2.16	0.37
0.42165	2.15	0.36
0.42323	2.14	0.35
0.42482	2.14	0.35
0.42641	2.13	0.34
0.42799	2.12	0.34
0.42958	2.12	0.33
0.43117	2.11	0.33
0.43275	2.1	0.32
0.43434	2.1	0.32
0.43593	2.09	0.31
0.43751	2.08	0.31
0.4391	2.08	0.3
0.44069	2.07	0.3
0.44228	2.06	0.3
0.44386	2.06	0.29
0.44545	2.05	0.29
0.44704	2.04	0.29
0.44863	2.04	0.28
0.45022	2.03	0.28
0.4518	2.02	0.28
0.45339	2.02	0.28
0.45498	2.01	0.27
0.45657	2.0	0.27
0.45816	2.0	0.27
0.45975	1.99	0.27
0.46133	1.98	0.27
0.46292	1.98	0.27
0.46451	1.97	0.26
0.4661	1.96	0.26
0.46769	1.96	0.26
0.46928	1.95	0.26
0.47087	1.95	0.26
0.47246	1.94	0.26
0.47405	1.93	0.26
0.47564	1.93	0.26
0.47723	1.92	0.26
0.47882	1.91	0.26
0.48041	1.91	0.26
0.482	1.9	0.26
0.48359	1.9	0.26
0.48518	1.89	0.26
0.48677	1.88	0.26
0.48836	1.88	0.26
0.48995	1.87	0.27
0.49154	1.86	0.27
0.49313	1.86	0.27
0.49472	1.85	0.27
0.49631	1.85	0.27
0.4979	1.84	0.27
0.49949	1.83	0.28
0.50108	1.83	0.28
0.50267	1.82	0.28
0.50426	1.82	0.28
0.50585	1.81	0.29
0.50744	1.8	0.29
0.50904	1.8	0.29
0.51063	1.79	0.3
0.51222	1.79	0.3
0.51381	1.78	0.3
0.5154	1.78	0.31
0.51699	1.77	0.31
0.51858	1.77	0.31
0.52018	1.76	0.32
0.52177	1.76	0.32
0.52336	1.75	0.33
0.52495	1.75	0.33
0.52654	1.74	0.34
0.52813	1.74	0.34
0.52973	1.73	0.35
0.53132	1.73	0.35
0.53291	1.72	0.36
0.5345	1.72	0.37
0.53609	1.72	0.37
0.53769	1.71	0.38
0.53928	1.71	0.38
0.54087	1.71	0.39
0.54246	1.7	0.4
0.54406	1.7	0.4
0.54565	1.7	0.41
0.54724	1.7	0.42
0.54883	1.69	0.42
0.55043	1.69	0.43
0.55202	1.69	0.44
0.55361	1.69	0.44
0.5552	1.69	0.45
0.5568	1.69	0.46
0.55839	1.69	0.46
0.55998	1.69	0.47
0.56158	1.69	0.48
0.56317	1.69	0.48
0.56476	1.69	0.49
0.56636	1.69	0.5
0.56795	1.69	0.5
0.56954	1.69	0.51
0.57113	1.69	0.51
0.57273	1.7	0.52
0.57432	1.7	0.52
0.57591	1.7	0.53
0.57751	1.7	0.53
0.5791	1.7	0.54
0.58069	1.7	0.54
0.58229	1.7	0.55
0.58388	1.71	0.55
0.58547	1.71	0.55
0.58707	1.71	0.56
0.58866	1.71	0.56
0.59025	1.71	0.56
0.59185	1.71	0.57
0.59344	1.71	0.57
0.59503	1.71	0.57
0.59663	1.71	0.58
0.59822	1.71	0.58
0.59981	1.71	0.58
0.60141	1.71	0.59
0.603	1.7	0.59
0.6046	1.7	0.6
0.60619	1.7	0.6
0.60778	1.7	0.61
0.60938	1.7	0.61
0.61097	1.69	0.62
0.61256	1.69	0.63
0.61416	1.69	0.63
0.61575	1.69	0.64
0.61734	1.68	0.65
0.61894	1.68	0.66
0.62053	1.68	0.67
0.62213	1.68	0.69
0.62372	1.68	0.7
0.62531	1.68	0.71
0.62691	1.68	0.73
0.6285	1.68	0.74
0.63009	1.68	0.76
0.63169	1.69	0.78
0.63328	1.7	0.8
0.63487	1.71	0.82
0.63647	1.72	0.83
0.63806	1.74	0.85
0.63965	1.75	0.87
0.64125	1.77	0.88
0.64284	1.8	0.9
0.64444	1.82	0.91
0.64603	1.85	0.92
0.64762	1.88	0.92
0.64922	1.9	0.92
0.65081	1.93	0.92
0.6524	1.96	0.91
0.654	1.99	0.9
0.65559	2.01	0.89
0.65718	2.04	0.87
0.65878	2.06	0.85
0.66037	2.07	0.83
0.66196	2.09	0.81
0.66356	2.1	0.79
0.66515	2.1	0.77
0.66674	2.11	0.75
0.66834	2.11	0.72
0.66993	2.11	0.7
0.67152	2.1	0.68
0.67312	2.1	0.67
0.67471	2.09	0.65
0.6763	2.08	0.64
0.6779	2.07	0.62
0.67949	2.06	0.61
0.68108	2.05	0.6
0.68267	2.04	0.59
0.68427	2.03	0.59
0.68586	2.02	0.58
0.68745	2.0	0.58
0.68905	1.99	0.58
0.69064	1.98	0.58
0.69223	1.96	0.58
0.69382	1.95	0.58
0.69542	1.94	0.58
0.69701	1.93	0.59
0.6986	1.92	0.6
0.7002	1.91	0.6
0.70179	1.9	0.61
0.70338	1.89	0.62
0.70497	1.88	0.64
0.70657	1.87	0.65
0.70816	1.87	0.67
0.70975	1.86	0.68
0.71134	1.86	0.7
0.71293	1.86	0.72
0.71453	1.87	0.74
0.71612	1.87	0.76
0.71771	1.88	0.78
0.7193	1.9	0.8
0.72089	1.91	0.82
0.72249	1.93	0.83
0.72408	1.95	0.85
0.72567	1.98	0.86
0.72726	2.01	0.86
0.72885	2.03	0.87
0.73044	2.06	0.86
0.73204	2.09	0.86
0.73363	2.12	0.85
0.73522	2.14	0.83
0.73681	2.16	0.81
0.7384	2.18	0.8
0.73999	2.19	0.77
0.74158	2.2	0.75
0.74317	2.21	0.73
0.74477	2.22	0.71
0.74636	2.22	0.69
0.74795	2.22	0.66
0.74954	2.22	0.64
0.75113	2.21	0.63
0.75272	2.21	0.61
0.75431	2.2	0.59
0.7559	2.19	0.58
0.75749	2.18	0.57
0.75908	2.17	0.55
0.76067	2.16	0.54
0.76226	2.15	0.54
0.76385	2.14	0.53
0.76544	2.13	0.52
0.76703	2.12	0.51
0.76862	2.11	0.51
0.77021	2.1	0.51
0.7718	2.09	0.5
0.77339	2.08	0.5
0.77498	2.07	0.5
0.77657	2.06	0.5
0.77816	2.05	0.5
0.77975	2.04	0.5
0.78133	2.03	0.5
0.78292	2.02	0.51
0.78451	2.01	0.51
0.7861	2.0	0.51
0.78769	2.0	0.52
0.78928	1.99	0.52
0.79087	1.98	0.53
0.79246	1.98	0.54
0.79404	1.97	0.55
0.79563	1.97	0.55
0.79722	1.97	0.56
0.79881	1.97	0.57
0.8004	1.97	0.58
0.80198	1.97	0.59
0.80357	1.97	0.59
0.80516	1.98	0.6
0.80675	1.99	0.6
0.80833	1.99	0.61
0.80992	2.0	0.61
0.81151	2.01	0.61
0.81309	2.01	0.6
0.81468	2.02	0.6
0.81627	2.02	0.59
0.81786	2.02	0.59
0.81944	2.02	0.58
0.82103	2.02	0.58
0.82261	2.02	0.57
0.8242	2.02	0.57
0.82579	2.01	0.56
0.82737	2.01	0.56
0.82896	2.01	0.56
0.83054	2.0	0.55
0.83213	2.0	0.55
0.83372	1.99	0.55
0.8353	1.99	0.55
0.83689	1.98	0.55
0.83847	1.98	0.55
0.84006	1.97	0.55
0.84164	1.97	0.55
0.84323	1.96	0.55
0.84481	1.96	0.55
0.84639	1.95	0.55
0.84798	1.95	0.56
0.84956	1.95	0.56
0.85115	1.94	0.56
0.85273	1.94	0.56
0.85431	1.93	0.56
0.8559	1.93	0.57
0.85748	1.93	0.57
0.85907	1.92	0.57
0.86065	1.92	0.57
0.86223	1.92	0.58
0.86381	1.92	0.58
0.8654	1.91	0.58
0.86698	1.91	0.58
0.86856	1.91	0.59
0.87014	1.9	0.59
0.87173	1.9	0.59
0.87331	1.9	0.6
0.87489	1.9	0.6
0.87647	1.89	0.6
0.87805	1.89	0.61
0.87964	1.89	0.61
0.88122	1.89	0.61
0.8828	1.89	0.61
0.88438	1.88	0.62
0.88596	1.88	0.62
0.88754	1.88	0.62
0.88912	1.88	0.63
0.8907	1.87	0.63
0.89228	1.87	0.63
0.89386	1.87	0.64
0.89544	1.87	0.64
0.89702	1.87	0.64
0.8986	1.86	0.65
0.90018	1.86	0.65
0.90176	1.86	0.65
0.90334	1.86	0.66
0.90492	1.86	0.66
0.9065	1.86	0.67
0.90808	1.85	0.67
0.90965	1.85	0.67
0.91123	1.85	0.68
0.91281	1.85	0.68
0.91439	1.85	0.68
0.91597	1.84	0.69
0.91754	1.84	0.69
0.91912	1.84	0.7
0.9207	1.84	0.7
0.92228	1.84	0.71
0.92385	1.84	0.71
0.92543	1.84	0.72
0.92701	1.83	0.72
0.92858	1.83	0.72
0.93016	1.83	0.73
0.93173	1.83	0.73
0.93331	1.83	0.74
0.93489	1.83	0.74
0.93646	1.83	0.75
0.93804	1.82	0.75
0.93961	1.82	0.76
0.94119	1.82	0.76
0.94276	1.82	0.77
0.94433	1.82	0.78
0.94591	1.82	0.78
0.94748	1.82	0.79
0.94906	1.82	0.79
0.95063	1.82	0.8
0.9522	1.82	0.8
0.95378	1.82	0.81
0.95535	1.82	0.82
0.95692	1.82	0.82
0.9585	1.82	0.83
0.96007	1.82	0.83
0.96164	1.82	0.84
0.96321	1.82	0.84
0.96479	1.82	0.85
0.96636	1.82	0.86
0.96793	1.82	0.86
0.9695	1.82	0.87
0.97107	1.82	0.87
0.97264	1.83	0.88
0.97421	1.83	0.89
0.97578	1.83	0.89
0.97735	1.83	0.9
0.97892	1.83	0.9
0.98049	1.83	0.91
0.98206	1.83	0.92
0.98363	1.84	0.92
0.9852	1.84	0.93
0.98677	1.84	0.93
0.98834	1.84	0.94
0.98991	1.84	0.94
0.99148	1.84	0.95
0.99304	1.85	0.96
0.99461	1.85	0.96
0.99618	1.85	0.97
0.99775	1.85	0.97
0.99931	1.85	0.98
1.01313	1.87	1.04
1.01654	1.87	1.06
1.01994	1.88	1.08
1.02335	1.89	1.1
1.02675	1.9	1.12
1.03016	1.91	1.14
1.03357	1.93	1.17
1.03697	1.96	1.19
1.04038	1.99	1.2
1.04379	2.03	1.21
1.0472	2.07	1.21
1.05061	2.1	1.2
1.05402	2.13	1.18
1.05743	2.15	1.15
1.06084	2.15	1.12
1.06425	2.15	1.09
1.06766	2.14	1.07
1.07107	2.12	1.06
1.07448	2.1	1.05
1.07789	2.07	1.05
1.0813	2.04	1.06
1.08471	2.02	1.08
1.08813	1.99	1.1
1.09154	1.97	1.13
1.09495	1.95	1.16
1.09837	1.94	1.21
1.10178	1.92	1.26
1.1052	1.92	1.31
1.10861	1.93	1.37
1.11203	1.94	1.43
1.11544	1.97	1.5
1.11886	2.01	1.57
1.12227	2.06	1.63
1.12569	2.12	1.69
1.12911	2.2	1.74
1.13252	2.29	1.78
1.13594	2.39	1.8
1.13936	2.49	1.8
1.14278	2.59	1.78
1.1462	2.68	1.75
1.14961	2.76	1.7
1.15303	2.83	1.63
1.15645	2.87	1.57
1.15987	2.91	1.5
1.16329	2.92	1.43
1.16671	2.93	1.38
1.17014	2.92	1.33
1.17356	2.91	1.29
1.17698	2.9	1.27
1.1804	2.89	1.26
1.18382	2.89	1.26
1.18725	2.9	1.27
1.19067	2.92	1.27
1.19409	2.96	1.27
1.19752	3.01	1.25
1.20094	3.05	1.22
1.20436	3.09	1.17
1.20779	3.11	1.11
1.21121	3.12	1.04
1.21464	3.12	0.98
1.21807	3.1	0.93
1.22149	3.07	0.89
1.22492	3.04	0.85
1.22835	3.01	0.82
1.23177	2.97	0.81
1.2352	2.94	0.8
1.23863	2.91	0.79
1.24206	2.88	0.79
1.24549	2.85	0.8
1.24891	2.83	0.82
1.25234	2.81	0.84
1.25577	2.8	0.86
1.2592	2.79	0.88
1.26263	2.79	0.91
1.26606	2.8	0.94
1.2695	2.81	0.97
1.27293	2.84	1.0
1.27636	2.87	1.02
1.27979	2.91	1.04
1.28322	2.95	1.05
1.28666	3.0	1.05
1.29009	3.04	1.04
1.29352	3.09	1.02
1.29696	3.13	1.0
1.30039	3.17	0.96
1.30383	3.21	0.93
1.30726	3.23	0.88
1.3107	3.25	0.84
1.31413	3.27	0.8
1.31757	3.28	0.75
1.321	3.28	0.71
1.32444	3.28	0.67
1.32788	3.27	0.63
1.33132	3.27	0.6
1.33475	3.26	0.56
1.33819	3.25	0.53
1.34163	3.23	0.5
1.34507	3.22	0.48
1.34851	3.21	0.45
1.35195	3.19	0.43
1.35539	3.18	0.41
1.35883	3.16	0.39
1.36227	3.15	0.38
1.36571	3.13	0.36
1.36915	3.12	0.35
1.37259	3.1	0.33
1.37603	3.09	0.32
1.37948	3.08	0.31
1.38292	3.06	0.3
1.38636	3.05	0.29
1.38981	3.04	0.28
1.39325	3.03	0.27
1.39669	3.01	0.26
1.40014	3.0	0.26
1.40358	2.99	0.25
1.40703	2.98	0.24
1.41047	2.97	0.24
1.41392	2.96	0.23
1.41736	2.95	0.22
1.42081	2.94	0.22
1.42426	2.93	0.21
1.42771	2.92	0.21
1.43115	2.91	0.21
1.4346	2.9	0.2
1.43805	2.89	0.2
1.4415	2.88	0.19
1.44495	2.87	0.19
1.4484	2.87	0.19
1.45185	2.86	0.18
1.4553	2.85	0.18
1.45875	2.84	0.18
1.4622	2.84	0.17
1.46565	2.83	0.17
1.4691	2.82	0.17
1.47255	2.81	0.17
1.476	2.81	0.16
1.47945	2.8	0.16
1.48291	2.79	0.16
1.48636	2.79	0.16
1.48981	2.78	0.15
1.49327	2.77	0.15
1.49672	2.77	0.15
1.50018	2.76	0.15
1.50363	2.76	0.15
1.50709	2.75	0.14
1.51054	2.75	0.14
1.514	2.74	0.14
1.51745	2.73	0.14
1.52091	2.73	0.14
1.52437	2.72	0.14
1.52783	2.72	0.13
1.53128	2.71	0.13
1.53474	2.71	0.13
1.5382	2.7	0.13
1.54166	2.7	0.13
1.54512	2.69	0.13
1.54858	2.69	0.13
1.55204	2.68	0.12
1.5555	2.68	0.12
1.55896	2.67	0.12
1.56242	2.67	0.12
1.56588	2.67	0.12
1.56934	2.66	0.12
1.5728	2.66	0.12
1.57626	2.65	0.12
1.57973	2.65	0.12
1.58319	2.64	0.11
1.58665	2.64	0.11
1.59012	2.64	0.11
1.59358	2.63	0.11
1.59704	2.63	0.11
1.60051	2.62	0.11
1.60397	2.62	0.11
1.60744	2.62	0.11
1.61091	2.61	0.11
1.61437	2.61	0.11
1.61784	2.6	0.11
1.6213	2.6	0.11
1.62477	2.6	0.1
1.62824	2.59	0.1
1.63171	2.59	0.1
1.63518	2.59	0.1
1.63864	2.58	0.1
1.64211	2.58	0.1
1.64558	2.58	0.1
1.64905	2.57	0.1
1.65252	2.57	0.1
1.65599	2.57	0.1
1.65946	2.56	0.1
1.66293	2.56	0.1
1.6664	2.56	0.1
1.66988	2.55	0.1
1.67335	2.55	0.09
1.67682	2.55	0.09
1.68029	2.54	0.09
1.68377	2.54	0.09
1.68724	2.54	0.09

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: —

Plot