Optical constants

Refractive index of CuCl (Cuprous chloride)

Feldman and Horowitz 1969: n 0.43–2.5 µm

Data: formula 4
Range: 0.43–2.5 µm
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.97719
Extinction coefficient k: 0

Permittivity ε₁: 3.9093
Permittivity ε₂: 0

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

Abbe number V_d: 16.921
Chromatic dispersion dn/dλ: -0.278601 µm⁻¹

Group index n_g: 2.1409
Group velocity dispersion: 601.296 fs²/mm

Dispersion parameter D: -3280.39 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

# CuCl (Cuprous chloride): Feldman and Horowitz 1969: n 0.43–2.5 µm
cucl = ls.fetch_refractiveindex("main", "CuCl", "Feldman", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cucl.range_nm)  # (430, 2500) nm
eps = cucl.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_e10bee7b9ae8/lightsmith"
cucl = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(cucl.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (cucl/feldman-horowitz-1969).

# ... load cucl as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=cucl)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=430, 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.

Dispersion formula

RefractiveIndex.INFO (formula 4), λ in µm

n^{2} = 3.58 + \frac{0.03162 λ^{2.0}}{λ^{2} - {0.1642}^{1.0}} + 0.09288 λ^{- 2.0}

Valid from 0.43 to 2.5 µm.

Coefficients as stored

C_i	Value
C1	3.58
C2	0.03162
C3	2.0
C4	0.1642
C5	1.0
C6	0.0
C7	0.0
C8	0.0
C9	1.0
C10	0.09288
C11	-2.0

Comments and conditions

Room temperature

References

A. Feldman and D. Horowitz. Refractive Index of Cuprous Chloride. J. Opt. Soc. Am. 59, 1406-1408 (1969)

doi:10.1364/josa.59.001406 Refractive Index of Cuprous Chloride*, Journal of the Optical Society of America (1969)

Cite

Albert Feldman and Deane Horowitz. Refractive Index of Cuprous Chloride*. Journal of the Optical Society of America, 59, 1406 (1969), doi:10.1364/josa.59.001406; 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

CuCl (Cuprous chloride), Feldman and Horowitz 1969: n 0.43–2.5 µm: n and k versus wavelength
λ (µm)	n
0.43	2.089202
0.431901	2.083736
0.433811	2.078838
0.435729	2.074407
0.437655	2.070366
0.439591	2.066653
0.441534	2.06322
0.443486	2.060027
0.445447	2.057042
0.447417	2.054238
0.449395	2.051594
0.451382	2.049091
0.453378	2.046714
0.455382	2.044448
0.457396	2.042284
0.459418	2.040211
0.461449	2.038221
0.46349	2.036305
0.465539	2.034459
0.467597	2.032676
0.469665	2.030952
0.471741	2.029281
0.473827	2.02766
0.475922	2.026085
0.478026	2.024553
0.48014	2.023062
0.482263	2.021609
0.484395	2.020191
0.486537	2.018807
0.488688	2.017454
0.490849	2.016132
0.493019	2.014837
0.495199	2.013569
0.497388	2.012327
0.499587	2.011109
0.501796	2.009914
0.504015	2.008741
0.506243	2.00759
0.508482	2.006459
0.51073	2.005347
0.512988	2.004254
0.515256	2.003179
0.517534	2.002121
0.519823	2.00108
0.522121	2.000055
0.524429	1.999045
0.526748	1.998051
0.529077	1.997071
0.531416	1.996105
0.533766	1.995153
0.536126	1.994214
0.538496	1.993288
0.540877	1.992375
0.543269	1.991474
0.545671	1.990585
0.548084	1.989707
0.550507	1.988841
0.552941	1.987985
0.555386	1.987141
0.557841	1.986306
0.560308	1.985482
0.562785	1.984669
0.565273	1.983864
0.567773	1.98307
0.570283	1.982285
0.572805	1.981509
0.575337	1.980742
0.577881	1.979984
0.580436	1.979234
0.583002	1.978493
0.58558	1.977761
0.588169	1.977036
0.59077	1.97632
0.593382	1.975611
0.596005	1.97491
0.598641	1.974217
0.601287	1.973531
0.603946	1.972853
0.606616	1.972182
0.609298	1.971518
0.611992	1.970861
0.614698	1.970211
0.617416	1.969567
0.620146	1.968931
0.622888	1.968301
0.625642	1.967677
0.628408	1.96706
0.631187	1.96645
0.633977	1.965845
0.63678	1.965247
0.639596	1.964654
0.642424	1.964068
0.645264	1.963487
0.648117	1.962913
0.650983	1.962344
0.653861	1.96178
0.656752	1.961223
0.659656	1.96067
0.662572	1.960124
0.665502	1.959582
0.668444	1.959046
0.6714	1.958515
0.674368	1.957989
0.67735	1.957469
0.680345	1.956953
0.683353	1.956442
0.686375	1.955937
0.689409	1.955436
0.692457	1.95494
0.695519	1.954449
0.698594	1.953962
0.701683	1.95348
0.704786	1.953003
0.707902	1.95253
0.711032	1.952062
0.714175	1.951598
0.717333	1.951138
0.720505	1.950683
0.72369	1.950232
0.72689	1.949785
0.730104	1.949343
0.733332	1.948905
0.736574	1.94847
0.739831	1.94804
0.743102	1.947614
0.746388	1.947192
0.749688	1.946774
0.753003	1.946359
0.756332	1.945949
0.759676	1.945542
0.763035	1.945139
0.766409	1.94474
0.769797	1.944345
0.773201	1.943953
0.776619	1.943565
0.780053	1.94318
0.783502	1.942799
0.786966	1.942421
0.790446	1.942047
0.793941	1.941676
0.797451	1.941309
0.800977	1.940945
0.804518	1.940584
0.808076	1.940227
0.811648	1.939873
0.815237	1.939522
0.818842	1.939175
0.822462	1.93883
0.826099	1.938489
0.829751	1.938151
0.83342	1.937815
0.837105	1.937483
0.840806	1.937154
0.844523	1.936828
0.848257	1.936505
0.852008	1.936185
0.855775	1.935867
0.859559	1.935553
0.863359	1.935241
0.867176	1.934933
0.871011	1.934627
0.874862	1.934323
0.87873	1.934023
0.882615	1.933725
0.886518	1.93343
0.890437	1.933138
0.894374	1.932848
0.898329	1.932561
0.902301	1.932276
0.90629	1.931994
0.910297	1.931715
0.914322	1.931438
0.918365	1.931163
0.922425	1.930891
0.926503	1.930621
0.9306	1.930354
0.934714	1.93009
0.938847	1.929827
0.942998	1.929567
0.947168	1.929309
0.951356	1.929054
0.955562	1.928801
0.959787	1.92855
0.96403	1.928301
0.968293	1.928055
0.972574	1.927811
0.976874	1.927569
0.981193	1.927329
0.985532	1.927091
0.989889	1.926856
0.994266	1.926622
0.998662	1.926391
1.00308	1.926161
1.00751	1.925934
1.01197	1.925709
1.01644	1.925486
1.02094	1.925264
1.02545	1.925045
1.02998	1.924828
1.03454	1.924612
1.03911	1.924399
1.04371	1.924187
1.04832	1.923977
1.05296	1.92377
1.05761	1.923564
1.06229	1.923359
1.06698	1.923157
1.0717	1.922957
1.07644	1.922758
1.0812	1.922561
1.08598	1.922366
1.09078	1.922172
1.0956	1.92198
1.10045	1.92179
1.10531	1.921602
1.1102	1.921415
1.11511	1.92123
1.12004	1.921047
1.12499	1.920865
1.12997	1.920685
1.13496	1.920506
1.13998	1.920329
1.14502	1.920154
1.15008	1.91998
1.15517	1.919807
1.16028	1.919637
1.16541	1.919467
1.17056	1.919299
1.17573	1.919133
1.18093	1.918968
1.18615	1.918805
1.1914	1.918643
1.19667	1.918482
1.20196	1.918323
1.20727	1.918166
1.21261	1.918009
1.21797	1.917855
1.22336	1.917701
1.22877	1.917549
1.2342	1.917398
1.23966	1.917249
1.24514	1.9171
1.25064	1.916954
1.25617	1.916808
1.26173	1.916664
1.2673	1.916521
1.27291	1.916379
1.27854	1.916239
1.28419	1.916099
1.28987	1.915961
1.29557	1.915825
1.3013	1.915689
1.30705	1.915555
1.31283	1.915421
1.31863	1.915289
1.32447	1.915159
1.33032	1.915029
1.3362	1.9149
1.34211	1.914773
1.34804	1.914647
1.35401	1.914521
1.35999	1.914397
1.366	1.914274
1.37204	1.914153
1.37811	1.914032
1.3842	1.913912
1.39032	1.913793
1.39647	1.913676
1.40265	1.913559
1.40885	1.913444
1.41508	1.913329
1.42133	1.913215
1.42762	1.913103
1.43393	1.912991
1.44027	1.912881
1.44664	1.912771
1.45303	1.912663
1.45946	1.912555
1.46591	1.912448
1.47239	1.912342
1.4789	1.912238
1.48544	1.912134
1.49201	1.912031
1.49861	1.911929
1.50523	1.911827
1.51189	1.911727
1.51857	1.911628
1.52529	1.911529
1.53203	1.911432
1.5388	1.911335
1.54561	1.911239
1.55244	1.911144
1.55931	1.911049
1.5662	1.910956
1.57313	1.910863
1.58008	1.910772
1.58707	1.910681
1.59408	1.91059
1.60113	1.910501
1.60821	1.910412
1.61532	1.910324
1.62246	1.910237
1.62964	1.910151
1.63684	1.910066
1.64408	1.909981
1.65135	1.909897
1.65865	1.909814
1.66598	1.909731
1.67335	1.909649
1.68075	1.909568
1.68818	1.909488
1.69564	1.909408
1.70314	1.909329
1.71067	1.909251
1.71824	1.909173
1.72583	1.909096
1.73346	1.90902
1.74113	1.908944
1.74883	1.90887
1.75656	1.908795
1.76432	1.908722
1.77213	1.908649
1.77996	1.908576
1.78783	1.908505
1.79574	1.908434
1.80368	1.908363
1.81165	1.908294
1.81966	1.908224
1.82771	1.908156
1.83579	1.908088
1.8439	1.908021
1.85206	1.907954
1.86024	1.907888
1.86847	1.907822
1.87673	1.907757
1.88503	1.907693
1.89336	1.907629
1.90173	1.907565
1.91014	1.907503
1.91859	1.90744
1.92707	1.907379
1.93559	1.907318
1.94415	1.907257
1.95275	1.907197
1.96138	1.907137
1.97005	1.907078
1.97876	1.90702
1.98751	1.906962
1.9963	1.906905
2.00513	1.906848
2.01399	1.906791
2.0229	1.906735
2.03184	1.90668
2.04082	1.906625
2.04985	1.90657
2.05891	1.906516
2.06801	1.906463
2.07716	1.90641
2.08634	1.906357
2.09557	1.906305
2.10483	1.906253
2.11414	1.906202
2.12348	1.906151
2.13287	1.906101
2.1423	1.906051
2.15178	1.906002
2.16129	1.905953
2.17085	1.905904
2.18044	1.905856
2.19008	1.905808
2.19977	1.905761
2.20949	1.905714
2.21926	1.905668
2.22908	1.905622
2.23893	1.905576
2.24883	1.905531
2.25877	1.905486
2.26876	1.905441
2.27879	1.905397
2.28887	1.905354
2.29899	1.90531
2.30915	1.905267
2.31936	1.905225
2.32962	1.905183
2.33992	1.905141
2.35026	1.905099
2.36065	1.905058
2.37109	1.905018
2.38158	1.904977
2.39211	1.904937
2.40268	1.904898
2.41331	1.904858
2.42398	1.904819
2.43469	1.904781
2.44546	1.904742
2.45627	1.904705
2.46713	1.904667
2.47804	1.90463
2.489	1.904593
2.5	1.904556

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: —

CuCl (Cuprous chloride): all datasets

Feldman and Horowitz 1969: n 0.43–2.5 µm n 0.43–2.5 µm default

About CuCl (Cuprous chloride)

Cuprous chloride (CuCl) is a white or pale green solid widely utilized as a catalyst in organic synthesis and as a precursor to other copper compounds. In the optics realm, cuprous chloride has attracted interest for its utility in creating semiconductor lasers that can operate at room temperature. The material has a zinc blende crystal structure and exhibits strong excitonic emission, qualities that make it promising for optoelectronic applications. Additionally, its suitability for forming photonic crystals expands its range of potential optical uses. While not a conventional choice in optical components, cuprous chloride holds significant promise for specialized applications such as light-emitting diodes (LEDs) and other semiconductor-based optical technologies.

Copper(I) chloride - Wikipedia

More about CuCl (Cuprous chloride) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/CuCl/nk/Feldman.yml
ID: ds_e10bee7b9ae8
API: /v1/datasets/ds_e10bee7b9ae8

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