Optical constants

Refractive index of AgCl (Silver chloride)

Tilton et al. 1950: n 0.578–20.6 µm

Data: formula 4
Range: 0.578–20.6 µm
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 2.06685
Extinction coefficient k: 0

Permittivity ε₁: 4.27186
Permittivity ε₂: 0

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

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.251009 µm⁻¹

Group index n_g: 2.21434
Group velocity dispersion: 542.765 fs²/mm

Dispersion parameter D: -2961.07 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

# AgCl (Silver chloride): Tilton et al. 1950: n 0.578–20.6 µm
agcl = ls.fetch_refractiveindex("main", "AgCl", "Tilton", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(agcl.range_nm)  # (578, 20600) nm
eps = agcl.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_8be47839a69d/lightsmith"
agcl = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(agcl.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (agcl/tilton-1950).

# ... load agcl as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=agcl)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=578, 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} = 4.00804 + \frac{0.079086 λ^{0.0}}{λ^{2} - {0.04584}^{1.0}} - 0.00085111 λ^{2.0} - 1.9762 \times 10^{-7} λ^{4.0}

Valid from 0.578 to 20.6 µm.

Coefficients as stored

C_i	Value
C1	4.00804
C2	0.079086
C3	0.0
C4	0.04584
C5	1.0
C6	0.0
C7	0.0
C8	0.0
C9	1.0
C10	-0.00085111
C11	2.0
C12	-1.9762e-07
C13	4.0

Comments and conditions

23.9 °C

References

L. W. Tilton, E. K. Plyler, R. E. Stephens. Refractive index of silver chloride for visible and infra-red radiant energy. J. Opt. Soc. Am. 40, 540-541 (1950)

doi:10.1364/josa.40.000540 Refractive Index of Silver Chloride for Visible and Infra-Red Radiant Energy*, Journal of the Optical Society of America (1950)

Cite

Leroy W. Tilton, Earle K. Plyler and Robert E. Stephens. Refractive Index of Silver Chloride for Visible and Infra-Red Radiant Energy*. Journal of the Optical Society of America, 40, 540 (1950), doi:10.1364/josa.40.000540; 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

AgCl (Silver chloride), Tilton et al. 1950: n 0.578–20.6 µm: n and k versus wavelength
λ (µm)	n
0.578	2.06933
0.5832	2.067968
0.588446	2.066637
0.59374	2.065336
0.599082	2.064063
0.604471	2.062819
0.609909	2.061603
0.615396	2.060414
0.620933	2.05925
0.626519	2.058112
0.632155	2.056999
0.637842	2.05591
0.64358	2.054845
0.64937	2.053803
0.655212	2.052783
0.661106	2.051784
0.667054	2.050808
0.673055	2.049851
0.67911	2.048916
0.68522	2.048
0.691384	2.047103
0.697604	2.046225
0.70388	2.045365
0.710212	2.044523
0.716601	2.043699
0.723048	2.042892
0.729553	2.042102
0.736116	2.041327
0.742738	2.040569
0.74942	2.039826
0.756162	2.039099
0.762965	2.038386
0.769829	2.037688
0.776754	2.037003
0.783742	2.036333
0.790793	2.035676
0.797907	2.035032
0.805086	2.034402
0.812328	2.033783
0.819636	2.033178
0.82701	2.032584
0.83445	2.032002
0.841957	2.031431
0.849531	2.030872
0.857174	2.030324
0.864885	2.029786
0.872666	2.029259
0.880517	2.028742
0.888438	2.028236
0.896431	2.027739
0.904496	2.027252
0.912633	2.026774
0.920843	2.026306
0.929127	2.025846
0.937486	2.025396
0.94592	2.024954
0.95443	2.024521
0.963016	2.024095
0.971679	2.023678
0.980421	2.023269
0.989241	2.022868
0.998141	2.022474
1.00712	2.022088
1.01618	2.021709
1.02532	2.021337
1.03455	2.020972
1.04385	2.020614
1.05324	2.020263
1.06272	2.019918
1.07228	2.019579
1.08193	2.019247
1.09166	2.018921
1.10148	2.018601
1.11139	2.018287
1.12139	2.017979
1.13148	2.017676
1.14166	2.017379
1.15193	2.017088
1.16229	2.016802
1.17275	2.01652
1.1833	2.016245
1.19394	2.015974
1.20468	2.015707
1.21552	2.015446
1.22646	2.01519
1.23749	2.014938
1.24862	2.01469
1.25986	2.014447
1.27119	2.014208
1.28263	2.013974
1.29416	2.013743
1.30581	2.013517
1.31755	2.013295
1.32941	2.013076
1.34137	2.012862
1.35343	2.012651
1.36561	2.012443
1.3779	2.01224
1.39029	2.01204
1.4028	2.011843
1.41542	2.01165
1.42815	2.01146
1.441	2.011273
1.45396	2.011089
1.46704	2.010909
1.48024	2.010731
1.49356	2.010556
1.507	2.010385
1.52055	2.010216
1.53423	2.01005
1.54804	2.009887
1.56196	2.009726
1.57601	2.009568
1.59019	2.009413
1.6045	2.00926
1.61893	2.009109
1.6335	2.008961
1.64819	2.008815
1.66302	2.008672
1.67798	2.008531
1.69308	2.008392
1.70831	2.008255
1.72368	2.00812
1.73918	2.007987
1.75483	2.007856
1.77062	2.007728
1.78654	2.007601
1.80262	2.007476
1.81883	2.007353
1.8352	2.007231
1.85171	2.007112
1.86837	2.006994
1.88517	2.006877
1.90213	2.006763
1.91925	2.00665
1.93651	2.006538
1.95393	2.006428
1.97151	2.00632
1.98925	2.006213
2.00714	2.006107
2.0252	2.006003
2.04342	2.0059
2.0618	2.005798
2.08035	2.005697
2.09907	2.005598
2.11795	2.0055
2.137	2.005403
2.15623	2.005308
2.17563	2.005213
2.1952	2.005119
2.21495	2.005027
2.23488	2.004935
2.25498	2.004845
2.27527	2.004755
2.29574	2.004666
2.31639	2.004578
2.33723	2.004491
2.35825	2.004405
2.37947	2.00432
2.40088	2.004235
2.42248	2.004151
2.44427	2.004068
2.46626	2.003985
2.48845	2.003903
2.51083	2.003822
2.53342	2.003741
2.55621	2.003661
2.57921	2.003582
2.60241	2.003503
2.62582	2.003424
2.64945	2.003346
2.67328	2.003269
2.69733	2.003191
2.7216	2.003115
2.74608	2.003038
2.77079	2.002962
2.79571	2.002886
2.82086	2.002811
2.84624	2.002736
2.87185	2.002661
2.89768	2.002586
2.92375	2.002511
2.95005	2.002437
2.97659	2.002363
3.00337	2.002288
3.03039	2.002214
3.05765	2.00214
3.08516	2.002066
3.11292	2.001993
3.14092	2.001919
3.16918	2.001845
3.19769	2.001771
3.22646	2.001697
3.25548	2.001622
3.28477	2.001548
3.31432	2.001474
3.34414	2.001399
3.37422	2.001324
3.40458	2.001249
3.43521	2.001174
3.46611	2.001098
3.49729	2.001022
3.52875	2.000946
3.5605	2.00087
3.59253	2.000793
3.62485	2.000716
3.65746	2.000638
3.69036	2.00056
3.72356	2.000481
3.75706	2.000402
3.79086	2.000322
3.82497	2.000242
3.85938	2.000161
3.8941	2.00008
3.92913	1.999998
3.96448	1.999915
4.00014	1.999832
4.03613	1.999748
4.07244	1.999663
4.10908	1.999577
4.14604	1.999491
4.18334	1.999404
4.22098	1.999316
4.25895	1.999227
4.29726	1.999137
4.33592	1.999046
4.37493	1.998955
4.41429	1.998862
4.454	1.998768
4.49407	1.998673
4.5345	1.998577
4.57529	1.99848
4.61646	1.998382
4.65799	1.998283
4.69989	1.998182
4.74217	1.99808
4.78483	1.997977
4.82788	1.997872
4.87131	1.997767
4.91514	1.997659
4.95936	1.997551
5.00397	1.997441
5.04899	1.997329
5.09441	1.997216
5.14024	1.997101
5.18648	1.996985
5.23314	1.996867
5.28022	1.996747
5.32772	1.996625
5.37565	1.996502
5.42402	1.996377
5.47281	1.99625
5.52205	1.996121
5.57172	1.995991
5.62185	1.995858
5.67243	1.995723
5.72346	1.995586
5.77495	1.995447
5.8269	1.995306
5.87932	1.995163
5.93221	1.995017
5.98558	1.994869
6.03943	1.994719
6.09376	1.994566
6.14858	1.994411
6.2039	1.994253
6.25971	1.994093
6.31602	1.99393
6.37284	1.993765
6.43018	1.993596
6.48802	1.993425
6.54639	1.993251
6.60528	1.993074
6.66471	1.992894
6.72467	1.992711
6.78516	1.992525
6.8462	1.992336
6.90779	1.992144
6.96994	1.991948
7.03264	1.991749
7.09591	1.991546
7.15975	1.99134
7.22416	1.99113
7.28915	1.990917
7.35472	1.9907
7.42089	1.990479
7.48765	1.990255
7.55501	1.990026
7.62298	1.989793
7.69156	1.989556
7.76075	1.989315
7.83057	1.98907
7.90102	1.98882
7.9721	1.988566
8.04382	1.988307
8.11618	1.988044
8.1892	1.987776
8.26287	1.987503
8.3372	1.987225
8.41221	1.986942
8.48789	1.986654
8.56425	1.986361
8.64129	1.986062
8.71903	1.985758
8.79747	1.985449
8.87662	1.985133
8.95647	1.984812
9.03705	1.984485
9.11835	1.984152
9.20038	1.983813
9.28315	1.983468
9.36666	1.983116
9.45093	1.982758
9.53595	1.982393
9.62174	1.982021
9.7083	1.981642
9.79564	1.981256
9.88376	1.980863
9.97268	1.980463
10.0624	1.980055
10.1529	1.97964
10.2443	1.979216
10.3364	1.978785
10.4294	1.978346
10.5232	1.977898
10.6179	1.977442
10.7134	1.976977
10.8098	1.976503
10.9071	1.97602
11.0052	1.975529
11.1042	1.975027
11.2041	1.974516
11.3049	1.973996
11.4066	1.973465
11.5092	1.972924
11.6127	1.972373
11.7172	1.971811
11.8226	1.971239
11.929	1.970655
12.0363	1.97006
12.1446	1.969453
12.2538	1.968835
12.3641	1.968205
12.4753	1.967562
12.5875	1.966907
12.7008	1.966239
12.815	1.965558
12.9303	1.964864
13.0467	1.964156
13.164	1.963434
13.2824	1.962698
13.4019	1.961947
13.5225	1.961181
13.6442	1.960401
13.7669	1.959604
13.8908	1.958792
14.0157	1.957964
14.1418	1.95712
14.269	1.956258
14.3974	1.955379
14.5269	1.954483
14.6576	1.953568
14.7895	1.952635
14.9225	1.951684
15.0568	1.950713
15.1922	1.949722
15.3289	1.948711
15.4668	1.94768
15.606	1.946627
15.7464	1.945554
15.888	1.944458
16.0309	1.943339
16.1752	1.942198
16.3207	1.941033
16.4675	1.939844
16.6157	1.938631
16.7651	1.937392
16.916	1.936128
17.0681	1.934837
17.2217	1.933519
17.3766	1.932174
17.5329	1.9308
17.6907	1.929397
17.8498	1.927965
18.0104	1.926502
18.1724	1.925009
18.3359	1.923484
18.5009	1.921926
18.6673	1.920335
18.8353	1.918709
19.0047	1.917049
19.1757	1.915353
19.3482	1.91362
19.5222	1.91185
19.6979	1.910041
19.8751	1.908193
20.0539	1.906304
20.2343	1.904374
20.4163	1.902401
20.6	1.900385

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: —

AgCl (Silver chloride): all datasets

Tilton et al. 1950: n 0.578–20.6 µm n 0.578–20.6 µm default

About AgCl (Silver chloride)

AgCl, or silver chloride, is an ionic compound that crystallizes in a face-centered cubic lattice. It is well-known for its photosensitivity, undergoing photodissociation into silver and chlorine upon exposure to ultraviolet or visible light. This property has historically made it valuable in photographic emulsions, similar to its counterpart AgBr. AgCl is also a material of interest in various optoelectronic applications, including photodetectors and waveguides. With a wide bandgap and high refractive index, AgCl serves as an effective material for devices requiring specific optical characteristics such as high transparency in the visible range. Moreover, AgCl is often used as an antireflection coating on optical components because of its low absorption coefficients. It's worth noting that the material is hygroscopic and can undergo chemical changes when exposed to moisture, which necessitates careful storage and handling. Recently, AgCl nanostructures have been investigated for their plasmonic properties and potential applications in sensing and catalysis. In summary, AgCl is a multifaceted material with a long history in photography that continues to be studied for its promising optical and electronic features.

More about AgCl (Silver chloride) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/AgCl/nk/Tilton.yml
ID: ds_8be47839a69d
API: /v1/datasets/ds_8be47839a69d

Plot