Optical constants

Refractive index of CBrCl₃ (Bromotrichloromethane)

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: 1.50456
Extinction coefficient k: 0

Permittivity ε₁: 2.2637
Permittivity ε₂: 0

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

Abbe number V_d: 41.452
Chromatic dispersion dn/dλ: -0.0622091 µm⁻¹

Group index n_g: 1.54112
Group velocity dispersion: 119.806 fs²/mm

Dispersion parameter D: -653.604 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

# CBrCl3 (Bromotrichloromethane): Chang et al. 2024: n 0.4–2.0 µm
cbrcl3 = ls.fetch_refractiveindex("organic", "bromotrichloromethane", "Chang", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cbrcl3.range_nm)  # (400, 2000) nm
eps = cbrcl3.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_c0d281671844/lightsmith"
cbrcl3 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(cbrcl3.source)  # citation and provenance travel with the data

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

# ... load cbrcl3 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=cbrcl3)],
    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_c0d281671844/lightsmith?model=drude_lorentz"
cbrcl3_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{1.211 λ^{2}}{λ^{2} - {0.12}^{2}}

Valid from 0.4 to 2.0 µm.

Coefficients as stored

C_i	Value
C1	0.0
C2	1.211
C3	0.12

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

CBrCl3 (Bromotrichloromethane), Chang et al. 2024: n 0.4–2.0 µm: n and k versus wavelength
λ (µm)	n
0.4	1.526686
0.401617	1.52634
0.40324	1.525997
0.40487	1.525657
0.406506	1.525321
0.408149	1.524987
0.409799	1.524657
0.411455	1.52433
0.413118	1.524006
0.414788	1.523685
0.416465	1.523367
0.418148	1.523052
0.419838	1.522739
0.421535	1.52243
0.423239	1.522123
0.424949	1.52182
0.426667	1.521519
0.428391	1.521221
0.430123	1.520926
0.431861	1.520633
0.433607	1.520343
0.435359	1.520056
0.437119	1.519771
0.438886	1.519489
0.44066	1.51921
0.442441	1.518933
0.444229	1.518658
0.446024	1.518387
0.447827	1.518117
0.449637	1.51785
0.451455	1.517586
0.453279	1.517324
0.455111	1.517064
0.456951	1.516806
0.458798	1.516551
0.460652	1.516299
0.462514	1.516048
0.464383	1.5158
0.46626	1.515554
0.468145	1.51531
0.470037	1.515069
0.471937	1.514829
0.473844	1.514592
0.47576	1.514357
0.477683	1.514124
0.479613	1.513893
0.481552	1.513664
0.483498	1.513437
0.485452	1.513213
0.487414	1.51299
0.489385	1.512769
0.491363	1.51255
0.493349	1.512334
0.495343	1.512119
0.497345	1.511906
0.499355	1.511694
0.501373	1.511485
0.5034	1.511278
0.505434	1.511072
0.507477	1.510869
0.509528	1.510667
0.511588	1.510466
0.513655	1.510268
0.515732	1.510071
0.517816	1.509877
0.519909	1.509683
0.52201	1.509492
0.52412	1.509302
0.526239	1.509114
0.528366	1.508928
0.530501	1.508743
0.532645	1.50856
0.534798	1.508378
0.53696	1.508198
0.53913	1.50802
0.541309	1.507843
0.543497	1.507667
0.545694	1.507494
0.547899	1.507321
0.550114	1.507151
0.552337	1.506981
0.55457	1.506813
0.556811	1.506647
0.559062	1.506482
0.561321	1.506319
0.56359	1.506157
0.565868	1.505996
0.568155	1.505837
0.570452	1.505679
0.572757	1.505523
0.575072	1.505367
0.577397	1.505214
0.57973	1.505061
0.582073	1.50491
0.584426	1.50476
0.586788	1.504612
0.58916	1.504464
0.591541	1.504318
0.593932	1.504174
0.596333	1.50403
0.598743	1.503888
0.601163	1.503747
0.603593	1.503607
0.606032	1.503469
0.608482	1.503331
0.610941	1.503195
0.613411	1.50306
0.61589	1.502926
0.618379	1.502793
0.620879	1.502662
0.623388	1.502531
0.625908	1.502402
0.628438	1.502274
0.630978	1.502147
0.633528	1.50202
0.636088	1.501895
0.638659	1.501772
0.641241	1.501649
0.643833	1.501527
0.646435	1.501406
0.649048	1.501286
0.651671	1.501168
0.654305	1.50105
0.656949	1.500933
0.659605	1.500817
0.662271	1.500703
0.664948	1.500589
0.667635	1.500476
0.670334	1.500364
0.673043	1.500253
0.675763	1.500144
0.678495	1.500035
0.681237	1.499926
0.68399	1.499819
0.686755	1.499713
0.689531	1.499608
0.692318	1.499503
0.695116	1.4994
0.697925	1.499297
0.700746	1.499195
0.703579	1.499094
0.706422	1.498994
0.709278	1.498895
0.712144	1.498796
0.715023	1.498699
0.717913	1.498602
0.720814	1.498506
0.723728	1.498411
0.726653	1.498316
0.72959	1.498223
0.732539	1.49813
0.7355	1.498038
0.738472	1.497947
0.741457	1.497856
0.744454	1.497767
0.747463	1.497678
0.750484	1.497589
0.753517	1.497502
0.756563	1.497415
0.759621	1.497329
0.762691	1.497244
0.765774	1.497159
0.768869	1.497076
0.771977	1.496992
0.775097	1.49691
0.77823	1.496828
0.781375	1.496747
0.784533	1.496667
0.787704	1.496587
0.790888	1.496508
0.794085	1.49643
0.797294	1.496352
0.800517	1.496275
0.803752	1.496198
0.807001	1.496122
0.810263	1.496047
0.813538	1.495973
0.816826	1.495899
0.820127	1.495825
0.823442	1.495753
0.82677	1.495681
0.830112	1.495609
0.833467	1.495538
0.836836	1.495468
0.840218	1.495398
0.843614	1.495329
0.847024	1.49526
0.850447	1.495192
0.853885	1.495125
0.857336	1.495058
0.860801	1.494992
0.86428	1.494926
0.867774	1.494861
0.871281	1.494796
0.874803	1.494732
0.878338	1.494668
0.881888	1.494605
0.885453	1.494543
0.889032	1.494481
0.892625	1.494419
0.896233	1.494358
0.899855	1.494298
0.903492	1.494238
0.907144	1.494178
0.910811	1.494119
0.914492	1.494061
0.918188	1.494003
0.921899	1.493945
0.925626	1.493888
0.929367	1.493831
0.933123	1.493775
0.936895	1.49372
0.940681	1.493664
0.944483	1.49361
0.948301	1.493555
0.952134	1.493501
0.955982	1.493448
0.959846	1.493395
0.963726	1.493342
0.967621	1.49329
0.971532	1.493239
0.975458	1.493187
0.979401	1.493137
0.98336	1.493086
0.987334	1.493036
0.991325	1.492987
0.995332	1.492937
0.999355	1.492889
1.00339	1.49284
1.00745	1.492792
1.01152	1.492745
1.01561	1.492698
1.01971	1.492651
1.02384	1.492604
1.02797	1.492558
1.03213	1.492513
1.0363	1.492467
1.04049	1.492422
1.04469	1.492378
1.04892	1.492334
1.05316	1.49229
1.05741	1.492246
1.06169	1.492203
1.06598	1.492161
1.07029	1.492118
1.07461	1.492076
1.07896	1.492035
1.08332	1.491993
1.0877	1.491952
1.09209	1.491912
1.09651	1.491871
1.10094	1.491831
1.10539	1.491792
1.10986	1.491752
1.11434	1.491713
1.11885	1.491674
1.12337	1.491636
1.12791	1.491598
1.13247	1.49156
1.13704	1.491523
1.14164	1.491486
1.14625	1.491449
1.15089	1.491412
1.15554	1.491376
1.16021	1.49134
1.1649	1.491304
1.16961	1.491269
1.17433	1.491234
1.17908	1.491199
1.18385	1.491165
1.18863	1.49113
1.19344	1.491096
1.19826	1.491063
1.2031	1.491029
1.20797	1.490996
1.21285	1.490963
1.21775	1.490931
1.22267	1.490899
1.22761	1.490867
1.23258	1.490835
1.23756	1.490803
1.24256	1.490772
1.24758	1.490741
1.25262	1.49071
1.25769	1.49068
1.26277	1.490649
1.26787	1.490619
1.273	1.49059
1.27814	1.49056
1.28331	1.490531
1.2885	1.490502
1.2937	1.490473
1.29893	1.490444
1.30418	1.490416
1.30945	1.490388
1.31475	1.49036
1.32006	1.490332
1.3254	1.490305
1.33075	1.490278
1.33613	1.490251
1.34153	1.490224
1.34696	1.490198
1.3524	1.490171
1.35787	1.490145
1.36335	1.490119
1.36886	1.490093
1.3744	1.490068
1.37995	1.490043
1.38553	1.490018
1.39113	1.489993
1.39675	1.489968
1.4024	1.489944
1.40807	1.489919
1.41376	1.489895
1.41947	1.489871
1.42521	1.489848
1.43097	1.489824
1.43675	1.489801
1.44256	1.489778
1.44839	1.489755
1.45424	1.489732
1.46012	1.48971
1.46602	1.489687
1.47195	1.489665
1.4779	1.489643
1.48387	1.489621
1.48987	1.4896
1.49589	1.489578
1.50194	1.489557
1.50801	1.489536
1.5141	1.489515
1.52022	1.489494
1.52637	1.489474
1.53254	1.489453
1.53873	1.489433
1.54495	1.489413
1.55119	1.489393
1.55746	1.489373
1.56376	1.489353
1.57008	1.489334
1.57643	1.489315
1.5828	1.489295
1.58919	1.489276
1.59562	1.489258
1.60207	1.489239
1.60854	1.48922
1.61504	1.489202
1.62157	1.489184
1.62813	1.489166
1.63471	1.489148
1.64131	1.48913
1.64795	1.489112
1.65461	1.489095
1.6613	1.489077
1.66801	1.48906
1.67475	1.489043
1.68152	1.489026
1.68832	1.489009
1.69514	1.488993
1.70199	1.488976
1.70887	1.48896
1.71578	1.488943
1.72271	1.488927
1.72968	1.488911
1.73667	1.488895
1.74369	1.48888
1.75074	1.488864
1.75781	1.488849
1.76492	1.488833
1.77205	1.488818
1.77921	1.488803
1.7864	1.488788
1.79362	1.488773
1.80087	1.488758
1.80815	1.488744
1.81546	1.488729
1.8228	1.488715
1.83017	1.4887
1.83756	1.488686
1.84499	1.488672
1.85245	1.488658
1.85993	1.488644
1.86745	1.488631
1.875	1.488617
1.88258	1.488604
1.89019	1.48859
1.89783	1.488577
1.9055	1.488564
1.9132	1.488551
1.92093	1.488538
1.9287	1.488525
1.93649	1.488512
1.94432	1.488499
1.95218	1.488487
1.96007	1.488474
1.96799	1.488462
1.97594	1.48845
1.98393	1.488438
1.99195	1.488426
2	1.488414

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: —

CBrCl₃ (Bromotrichloromethane): all datasets

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

About CBrCl3 (Bromotrichloromethane)

Methane (CH₄) is the simplest alkane and is a colorless, odorless gas under standard conditions. It is the primary constituent of natural gas and is notable for being a potent greenhouse gas. In the environment, methane is produced during the anaerobic decomposition of organic matter, such as in wetlands, ruminant digestion, and landfills. It can also be found in various industrial processes and is used as a fuel for heating and electricity generation. In the realm of optics, methane's refractive properties might be of interest, especially when considering its potential presence in gaseous atmospheres of extraterrestrial bodies.

More about CBrCl3 (Bromotrichloromethane) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/organic/CBrCl3 - bromotrichloromethane/nk/Chang.yml
ID: ds_c0d281671844
API: /v1/datasets/ds_c0d281671844

Plot