Optical constants

Refractive index of C₆F₁₄ (Perfluorohexane)

Chang et al. 2024: n 0.4–2.0 µm

Data: formula 1
Range: 0.4–2 µm
Temperature: 295 K
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.25161
Extinction coefficient k: 0

Permittivity ε₁: 1.56652
Permittivity ε₂: 0

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

Abbe number V_d: 69.623
Chromatic dispersion dn/dλ: -0.0185475 µm⁻¹

Group index n_g: 1.26251
Group velocity dispersion: 35.0145 fs²/mm

Dispersion parameter D: -191.023 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

# C6F14 (Perfluorohexane): Chang et al. 2024: n 0.4–2.0 µm
c6f14 = ls.fetch_refractiveindex("organic", "perfluorohexane", "Chang", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c6f14.range_nm)  # (400, 2000) nm
eps = c6f14.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_8e003a06fae7/lightsmith"
c6f14 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c6f14.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (perfluorohexane/chang-2024).

# ... load c6f14 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c6f14)],
    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"]).

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_8e003a06fae7/lightsmith?model=drude_lorentz"
c6f14_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))

A dispersive Drude–Lorentz model for time-domain solvers.

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.

Dispersion formula

Sellmeier (formula 1), λ in µm

n^{2} - 1 = \frac{0.5532 λ^{2}}{λ^{2} - {0.0901}^{2}}

Valid from 0.4 to 2.0 µm.

Coefficients as stored

C_i	Value
C1	0.0
C2	0.5532
C3	0.0901

Comments and conditions

21.5–22.0 °C.

Conditions

temperature: 295 K

References

H.-J. Chang, N. Munera, C. Lopez-Zelaya, D. Banerjee, G. Beadie, E. W. Van Stryland, D. J. Hagan. Refractive index measurements of liquids from 0.5 to 2 µm using Rayleigh interferometry. Opt. Mater. Express 14, 1253–1267 (2024)

doi:10.1364/ome.519907 Refractive index measurements of liquids from 0.5 to 2 µm using Rayleigh interferometry, Optical Materials Express (2024)

Cite

Hao-Jung Chang et al.. Refractive index measurements of liquids from 0.5 to 2 µm using Rayleigh interferometry. Optical Materials Express, 14, 1253 (2024), doi:10.1364/ome.519907; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 400 wavelengths, the same grid as the API and the library

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

C6F14 (Perfluorohexane), Chang et al. 2024: n 0.4–2.0 µm: n and k versus wavelength
λ (µm)	n
0.4	1.258081
0.401617	1.257982
0.40324	1.257883
0.40487	1.257786
0.406506	1.257689
0.408149	1.257593
0.409799	1.257498
0.411455	1.257403
0.413118	1.25731
0.414788	1.257217
0.416465	1.257125
0.418148	1.257034
0.419838	1.256944
0.421535	1.256855
0.423239	1.256766
0.424949	1.256678
0.426667	1.256591
0.428391	1.256504
0.430123	1.256419
0.431861	1.256334
0.433607	1.25625
0.435359	1.256166
0.437119	1.256084
0.438886	1.256002
0.44066	1.255921
0.442441	1.25584
0.444229	1.25576
0.446024	1.255681
0.447827	1.255602
0.449637	1.255525
0.451455	1.255448
0.453279	1.255371
0.455111	1.255295
0.456951	1.25522
0.458798	1.255146
0.460652	1.255072
0.462514	1.254999
0.464383	1.254926
0.46626	1.254854
0.468145	1.254783
0.470037	1.254712
0.471937	1.254642
0.473844	1.254572
0.47576	1.254503
0.477683	1.254435
0.479613	1.254367
0.481552	1.2543
0.483498	1.254234
0.485452	1.254168
0.487414	1.254102
0.489385	1.254037
0.491363	1.253973
0.493349	1.253909
0.495343	1.253846
0.497345	1.253783
0.499355	1.253721
0.501373	1.253659
0.5034	1.253598
0.505434	1.253538
0.507477	1.253477
0.509528	1.253418
0.511588	1.253359
0.513655	1.2533
0.515732	1.253242
0.517816	1.253185
0.519909	1.253127
0.52201	1.253071
0.52412	1.253015
0.526239	1.252959
0.528366	1.252904
0.530501	1.252849
0.532645	1.252795
0.534798	1.252741
0.53696	1.252688
0.53913	1.252635
0.541309	1.252583
0.543497	1.252531
0.545694	1.252479
0.547899	1.252428
0.550114	1.252377
0.552337	1.252327
0.55457	1.252277
0.556811	1.252228
0.559062	1.252179
0.561321	1.25213
0.56359	1.252082
0.565868	1.252034
0.568155	1.251987
0.570452	1.25194
0.572757	1.251893
0.575072	1.251847
0.577397	1.251801
0.57973	1.251756
0.582073	1.251711
0.584426	1.251666
0.586788	1.251622
0.58916	1.251578
0.591541	1.251535
0.593932	1.251491
0.596333	1.251449
0.598743	1.251406
0.601163	1.251364
0.603593	1.251322
0.606032	1.251281
0.608482	1.25124
0.610941	1.251199
0.613411	1.251159
0.61589	1.251119
0.618379	1.251079
0.620879	1.25104
0.623388	1.251001
0.625908	1.250962
0.628438	1.250924
0.630978	1.250886
0.633528	1.250848
0.636088	1.25081
0.638659	1.250773
0.641241	1.250736
0.643833	1.2507
0.646435	1.250664
0.649048	1.250628
0.651671	1.250592
0.654305	1.250557
0.656949	1.250522
0.659605	1.250487
0.662271	1.250453
0.664948	1.250419
0.667635	1.250385
0.670334	1.250351
0.673043	1.250318
0.675763	1.250285
0.678495	1.250252
0.681237	1.25022
0.68399	1.250187
0.686755	1.250155
0.689531	1.250124
0.692318	1.250092
0.695116	1.250061
0.697925	1.25003
0.700746	1.25
0.703579	1.249969
0.706422	1.249939
0.709278	1.249909
0.712144	1.24988
0.715023	1.24985
0.717913	1.249821
0.720814	1.249792
0.723728	1.249764
0.726653	1.249735
0.72959	1.249707
0.732539	1.249679
0.7355	1.249651
0.738472	1.249624
0.741457	1.249596
0.744454	1.249569
0.747463	1.249543
0.750484	1.249516
0.753517	1.24949
0.756563	1.249463
0.759621	1.249437
0.762691	1.249412
0.765774	1.249386
0.768869	1.249361
0.771977	1.249336
0.775097	1.249311
0.77823	1.249286
0.781375	1.249262
0.784533	1.249237
0.787704	1.249213
0.790888	1.249189
0.794085	1.249166
0.797294	1.249142
0.800517	1.249119
0.803752	1.249096
0.807001	1.249073
0.810263	1.24905
0.813538	1.249027
0.816826	1.249005
0.820127	1.248983
0.823442	1.248961
0.82677	1.248939
0.830112	1.248917
0.833467	1.248896
0.836836	1.248875
0.840218	1.248854
0.843614	1.248833
0.847024	1.248812
0.850447	1.248791
0.853885	1.248771
0.857336	1.248751
0.860801	1.248731
0.86428	1.248711
0.867774	1.248691
0.871281	1.248671
0.874803	1.248652
0.878338	1.248632
0.881888	1.248613
0.885453	1.248594
0.889032	1.248576
0.892625	1.248557
0.896233	1.248538
0.899855	1.24852
0.903492	1.248502
0.907144	1.248484
0.910811	1.248466
0.914492	1.248448
0.918188	1.24843
0.921899	1.248413
0.925626	1.248396
0.929367	1.248378
0.933123	1.248361
0.936895	1.248345
0.940681	1.248328
0.944483	1.248311
0.948301	1.248295
0.952134	1.248278
0.955982	1.248262
0.959846	1.248246
0.963726	1.24823
0.967621	1.248214
0.971532	1.248198
0.975458	1.248183
0.979401	1.248167
0.98336	1.248152
0.987334	1.248137
0.991325	1.248122
0.995332	1.248107
0.999355	1.248092
1.00339	1.248077
1.00745	1.248063
1.01152	1.248048
1.01561	1.248034
1.01971	1.24802
1.02384	1.248005
1.02797	1.247991
1.03213	1.247978
1.0363	1.247964
1.04049	1.24795
1.04469	1.247937
1.04892	1.247923
1.05316	1.24791
1.05741	1.247897
1.06169	1.247883
1.06598	1.24787
1.07029	1.247858
1.07461	1.247845
1.07896	1.247832
1.08332	1.247819
1.0877	1.247807
1.09209	1.247795
1.09651	1.247782
1.10094	1.24777
1.10539	1.247758
1.10986	1.247746
1.11434	1.247734
1.11885	1.247722
1.12337	1.247711
1.12791	1.247699
1.13247	1.247687
1.13704	1.247676
1.14164	1.247665
1.14625	1.247653
1.15089	1.247642
1.15554	1.247631
1.16021	1.24762
1.1649	1.247609
1.16961	1.247599
1.17433	1.247588
1.17908	1.247577
1.18385	1.247567
1.18863	1.247556
1.19344	1.247546
1.19826	1.247536
1.2031	1.247526
1.20797	1.247515
1.21285	1.247505
1.21775	1.247496
1.22267	1.247486
1.22761	1.247476
1.23258	1.247466
1.23756	1.247457
1.24256	1.247447
1.24758	1.247438
1.25262	1.247428
1.25769	1.247419
1.26277	1.24741
1.26787	1.2474
1.273	1.247391
1.27814	1.247382
1.28331	1.247373
1.2885	1.247365
1.2937	1.247356
1.29893	1.247347
1.30418	1.247338
1.30945	1.24733
1.31475	1.247321
1.32006	1.247313
1.3254	1.247304
1.33075	1.247296
1.33613	1.247288
1.34153	1.24728
1.34696	1.247272
1.3524	1.247264
1.35787	1.247256
1.36335	1.247248
1.36886	1.24724
1.3744	1.247232
1.37995	1.247224
1.38553	1.247217
1.39113	1.247209
1.39675	1.247201
1.4024	1.247194
1.40807	1.247187
1.41376	1.247179
1.41947	1.247172
1.42521	1.247165
1.43097	1.247158
1.43675	1.24715
1.44256	1.247143
1.44839	1.247136
1.45424	1.247129
1.46012	1.247122
1.46602	1.247116
1.47195	1.247109
1.4779	1.247102
1.48387	1.247095
1.48987	1.247089
1.49589	1.247082
1.50194	1.247076
1.50801	1.247069
1.5141	1.247063
1.52022	1.247057
1.52637	1.24705
1.53254	1.247044
1.53873	1.247038
1.54495	1.247032
1.55119	1.247026
1.55746	1.247019
1.56376	1.247013
1.57008	1.247008
1.57643	1.247002
1.5828	1.246996
1.58919	1.24699
1.59562	1.246984
1.60207	1.246978
1.60854	1.246973
1.61504	1.246967
1.62157	1.246962
1.62813	1.246956
1.63471	1.246951
1.64131	1.246945
1.64795	1.24694
1.65461	1.246934
1.6613	1.246929
1.66801	1.246924
1.67475	1.246919
1.68152	1.246913
1.68832	1.246908
1.69514	1.246903
1.70199	1.246898
1.70887	1.246893
1.71578	1.246888
1.72271	1.246883
1.72968	1.246878
1.73667	1.246873
1.74369	1.246868
1.75074	1.246864
1.75781	1.246859
1.76492	1.246854
1.77205	1.24685
1.77921	1.246845
1.7864	1.24684
1.79362	1.246836
1.80087	1.246831
1.80815	1.246827
1.81546	1.246822
1.8228	1.246818
1.83017	1.246814
1.83756	1.246809
1.84499	1.246805
1.85245	1.246801
1.85993	1.246796
1.86745	1.246792
1.875	1.246788
1.88258	1.246784
1.89019	1.24678
1.89783	1.246776
1.9055	1.246772
1.9132	1.246768
1.92093	1.246764
1.9287	1.24676
1.93649	1.246756
1.94432	1.246752
1.95218	1.246748
1.96007	1.246744
1.96799	1.246741
1.97594	1.246737
1.98393	1.246733
1.99195	1.246729
2	1.246726

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: —

C₆F₁₄ (Perfluorohexane): all datasets

Chang et al. 2024: n 0.4–2.0 µm n 0.4–2 µm default

About C6F14 (Perfluorohexane)

Perfluorohexane (C₆F₁₄) is a fully fluorinated carbon compound belonging to the class of perfluoroalkanes. It is a colorless, odorless, and chemically inert liquid that is highly resistant to heat, chemicals, and electrical conductivity. Due to these properties, perfluorohexane is primarily used in applications requiring high chemical stability and low reactivity, such as in cooling systems for electronic equipment and as a heat transfer fluid. It also finds use in the medical field as a liquid ventilation fluid to improve oxygen delivery in respiratory treatments. While its optical applications are not prominent, perfluorohexane's unique density and non-polar characteristics can be utilized in specialized scientific studies where such traits are required.

More about C6F14 (Perfluorohexane) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/organic/C6F14 - perfluorohexane/nk/Chang.yml
ID: ds_8e003a06fae7
API: /v1/datasets/ds_8e003a06fae7

Plot