Optical constants

Refractive index of Cs2AgBiBr6 (Cesium silver bismuth bromide, CABB)

Jöbsis et al. 2021: n,k 0.300–1.70 µm

Data
tabulated nk
Range
0.3–1.698 µm
Points
700
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.3–1.698 µm
Refractive index n
2.11089
Extinction coefficient k
0.0120156
Permittivity ε1
4.45573
Permittivity ε2
0.0507273
Absorption coefficient α
2569.65 cm⁻¹
Penetration depth δ = λ/(2πk)
7783.17 nm
Abbe number Vd
—
Chromatic dispersion dn/dλ
-0.966 µm⁻¹
Group index ng
2.67852
Group velocity dispersion
— fs²/mm
Dispersion parameter D
— ps/(nm·km)
Photon energy
2.11001 eV

ε = (n + ik)², α = 4πk/λ, ng = 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

# Cs2AgBiBr6 (Cesium silver bismuth bromide, CABB): Jöbsis et al. 2021: n,k 0.300–1.70 µm
cs2agbibr6 = ls.fetch_refractiveindex("other", "Cs2AgBiBr6", "Jobsis", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cs2agbibr6.range_nm)  # (300, 1698) nm
eps = cs2agbibr6.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

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

Cs2AgBiBr6 thin films of 100 nm at room temperature

References

H. J. Jöbsis, V. M. Caselli, S. H. C. Askes, E. C. Garnett, T. J. Savenije, F. T. Rabouw, E. M. Hutter. Recombination and localization: Unfolding the pathways behind conductivity losses in Cs2AgBiBr6 thin films. Appl. Phys. Lett. 119, 131908 (2021) (Numerical data kindly provided by Huygen Jöbsis)
  • doi:10.1063/5.0061899 Recombination and localization: Unfolding the pathways behind conductivity losses in Cs2AgBiBr6 thin films, Applied Physics Letters (2021)

Cite

Huygen J. Jöbsis et al.. Recombination and localization: Unfolding the pathways behind conductivity losses in Cs2AgBiBr6 thin films. Applied Physics Letters, 119, 131908 (2021), doi:10.1063/5.0061899; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

700 rows as published
Cs2AgBiBr6 (Cesium silver bismuth bromide, CABB), Jöbsis et al. 2021: n,k 0.300–1.70 µm: n and k versus wavelength
λ (µm)nk
0.32.0839430.577623
0.3022.086580.577884
0.3042.0896750.578237
0.3062.0932510.578631
0.3082.0973240.579007
0.312.1019060.579305
0.3122.1069980.579459
0.3142.1125960.5794
0.3162.1186850.579057
0.3182.1252420.578359
0.322.132230.577236
0.3222.1396030.57562
0.3242.1473050.573449
0.3262.155270.570665
0.3282.1634210.567219
0.332.1716710.563071
0.3322.179930.558194
0.3342.1880980.55257
0.3362.1960720.546195
0.3382.2037480.53908
0.342.2110160.531245
0.3422.2177690.522729
0.3442.2238960.513579
0.3462.2292850.503863
0.3482.2338220.493663
0.352.2373870.483088
0.3522.2398590.47228
0.3542.2411230.461428
0.3562.2410860.45078
0.3582.2397040.440654
0.362.2370240.431435
0.3622.233230.423548
0.3642.2286830.417406
0.3662.223940.413328
0.3682.2197340.411436
0.372.2168890.41156
0.3722.2161940.413181
0.3742.2182290.415445
0.3762.2232210.417259
0.3782.2309460.417463
0.382.2407260.415034
0.3822.2515270.409265
0.3842.2621230.399879
0.3862.2712840.387054
0.3882.2779430.37137
0.392.2813190.353693
0.3922.280970.335044
0.3942.2767950.316461
0.3962.2689820.298892
0.3982.2579340.283122
0.42.2441770.269741
0.4022.2282770.259149
0.4042.2107780.251591
0.4062.1921550.247206
0.4082.1728010.246092
0.412.153040.248364
0.4122.1331530.254208
0.4142.1134440.263925
0.4162.0943210.277959
0.4182.0764050.296898
0.422.0606870.32143
0.4222.0487090.352208
0.4242.0427560.389564
0.4262.0459340.433001
0.4282.0619370.480429
0.432.0940460.527375
0.4322.143480.56704
0.4342.2076010.591523
0.4362.2792060.594686
0.4382.3483680.575159
0.442.4061990.537128
0.4422.4479240.488122
0.4442.4733110.435678
0.4462.4850280.385202
0.4482.4866840.33959
0.452.4815930.29985
0.4522.4723180.265898
0.4542.4606610.237142
0.4562.4478170.212836
0.4582.4345410.192246
0.462.4212990.174722
0.4622.4083630.159717
0.4642.3958840.146782
0.4662.3839360.135552
0.4682.3725490.125735
0.472.3617210.117095
0.4722.3514360.109439
0.4742.3416690.102614
0.4762.332390.096494
0.4782.3235670.090976
0.482.315170.085975
0.4822.3071680.081422
0.4842.2995340.077258
0.4862.292240.073434
0.4882.2852630.069909
0.492.2785790.066649
0.4922.2721690.063623
0.4942.2660130.060807
0.4962.2600940.058178
0.4982.2543970.055718
0.52.2489070.053411
0.5022.2436120.051241
0.5042.2384980.049198
0.5062.2335550.047269
0.5082.2287740.045446
0.512.2241440.043719
0.5122.2196570.042081
0.5142.2153060.040525
0.5162.2110830.039045
0.5182.2069820.037636
0.522.2029960.036293
0.5222.199120.03501
0.5242.1953480.033786
0.5262.1916750.032614
0.5282.1880970.031493
0.532.184610.03042
0.5322.1812090.02939
0.5342.1778910.028403
0.5362.1746520.027455
0.5382.1714890.026545
0.542.1683990.02567
0.5422.165380.024829
0.5442.1624270.024019
0.5462.1595390.02324
0.5482.1567130.02249
0.552.1539480.021767
0.5522.1512410.02107
0.5542.1485890.020399
0.5562.1459910.019751
0.5582.1434450.019126
0.562.140950.018523
0.5622.1385030.01794
0.5642.1361040.017378
0.5662.133750.016835
0.5682.131440.016311
0.572.1291740.015804
0.5722.1269480.015314
0.5742.1247640.014841
0.5762.1226180.014384
0.5782.1205110.013942
0.582.118440.013514
0.5822.1164050.013101
0.5842.1144060.012701
0.5862.112440.012314
0.5882.1105080.011941
0.592.1086080.011579
0.5922.1067390.011229
0.5942.1049010.010891
0.5962.1030930.010564
0.5982.1013140.010248
0.62.0995630.009942
0.6022.097840.009647
0.6042.0961440.009361
0.6062.0944750.009085
0.6082.0928310.008818
0.612.0912130.00856
0.6122.089620.00831
0.6142.088050.008069
0.6162.0865040.007837
0.6182.0849810.007612
0.622.0834810.007395
0.6222.0820030.007185
0.6242.0805470.006983
0.6262.0791120.006788
0.6282.0776980.0066
0.632.0763040.006419
0.6322.074930.006245
0.6342.0735760.006076
0.6362.0722410.005915
0.6382.0709240.005759
0.642.0696270.005609
0.6422.0683470.005465
0.6442.0670860.005326
0.6462.0658420.005194
0.6482.0646150.005066
0.652.0634050.004944
0.6522.0622120.004827
0.6542.0610350.004715
0.6562.0598740.004608
0.6582.0587290.004505
0.662.05760.004408
0.6622.0564860.004315
0.6642.0553880.004226
0.6662.0543040.004142
0.6682.0532350.004062
0.672.0521810.003986
0.6722.0511410.003915
0.6742.0501150.003847
0.6762.0491030.003784
0.6782.0481060.003724
0.682.0471220.003668
0.6822.0461520.003616
0.6842.0451950.003567
0.6862.0442520.003522
0.6882.0433230.00348
0.692.0424080.003442
0.6922.0415070.003407
0.6942.0406210.003373
0.6962.0397480.003339
0.6982.0388880.003307
0.72.0380390.003275
0.7022.0372030.003243
0.7042.0363780.003212
0.7062.0355640.003182
0.7082.0347610.003152
0.712.0339680.003123
0.7122.0331850.003095
0.7142.0324130.003066
0.7162.031650.003039
0.7182.0308970.003012
0.722.0301530.002985
0.7222.0294180.002959
0.7242.0286920.002933
0.7262.0279750.002908
0.7282.0272670.002883
0.732.0265670.002859
0.7322.0258750.002834
0.7342.0251920.002811
0.7362.0245160.002788
0.7382.0238480.002765
0.742.0231880.002742
0.7422.0225360.00272
0.7442.0218910.002698
0.7462.0212530.002677
0.7482.0206220.002656
0.752.0199990.002635
0.7522.0193820.002615
0.7542.0187720.002595
0.7562.0181690.002575
0.7582.0175720.002555
0.762.0169820.002536
0.7622.0163980.002517
0.7642.015820.002499
0.7662.0152490.00248
0.7682.0146830.002462
0.772.0141240.002444
0.7722.0135710.002427
0.7742.0130230.00241
0.7762.0124810.002393
0.7782.0119440.002376
0.782.0114130.002359
0.7822.0108880.002343
0.7842.0103670.002327
0.7862.0098520.002311
0.7882.0093430.002295
0.792.0088380.00228
0.7922.0083380.002265
0.7942.0078440.00225
0.7962.0073540.002235
0.7982.0068690.00222
0.82.0063890.002206
0.8022.0059130.002192
0.8042.0054420.002178
0.8062.0049760.002164
0.8082.0045140.00215
0.812.0040570.002136
0.8122.0036030.002123
0.8142.0031550.00211
0.8162.002710.002097
0.8182.002270.002084
0.822.0018330.002072
0.8222.0014010.002059
0.8242.0009730.002047
0.8262.0005490.002034
0.8282.0001290.002022
0.831.9997120.002011
0.8321.9992990.001999
0.8341.9988910.001987
0.8361.9984850.001976
0.8381.9980840.001964
0.841.9976860.001953
0.8421.9972910.001942
0.8441.9969010.001931
0.8461.9965130.00192
0.8481.9961290.00191
0.851.9957490.001899
0.8521.9953710.001889
0.8541.9949980.001878
0.8561.9946270.001868
0.8581.9942590.001858
0.861.9938950.001848
0.8621.9935340.001838
0.8641.9931760.001828
0.8661.9928210.001819
0.8681.9924690.001809
0.871.992120.0018
0.8721.9917740.001791
0.8741.9914310.001781
0.8761.9910910.001772
0.8781.9907540.001763
0.881.9904190.001754
0.8821.9900870.001745
0.8841.9897580.001737
0.8861.9894320.001728
0.8881.9891080.001719
0.891.9887870.001711
0.8921.9884690.001703
0.8941.9881530.001694
0.8961.987840.001686
0.8981.987530.001678
0.91.9872210.00167
0.9021.9869160.001662
0.9041.9866120.001654
0.9061.9863120.001646
0.9081.9860130.001638
0.911.9857170.001631
0.9121.9854230.001623
0.9141.9851320.001616
0.9161.9848430.001608
0.9181.9845560.001601
0.921.9842720.001594
0.9221.9839890.001586
0.9241.9837090.001579
0.9261.9834310.001572
0.9281.9831550.001565
0.931.9828810.001558
0.9321.9826090.001551
0.9341.982340.001544
0.9361.9820720.001538
0.9381.9818070.001531
0.941.9815430.001524
0.9421.9812820.001518
0.9441.9810220.001511
0.9461.9807640.001505
0.9481.9805090.001498
0.951.9802550.001492
0.9521.9800030.001486
0.9541.9797530.00148
0.9561.9795050.001473
0.9581.9792580.001467
0.961.9790140.001461
0.9621.9787710.001455
0.9641.978530.001449
0.9661.9782910.001443
0.9681.9780530.001437
0.971.9778170.001432
0.9721.9775830.001426
0.9741.9773510.00142
0.9761.977120.001415
0.9781.9768910.001409
0.981.9766630.001403
0.9821.9764370.001398
0.9841.9762130.001392
0.9861.9759910.001387
0.9881.9757690.001382
0.991.975550.001376
0.9921.9753320.001371
0.9941.9751150.001366
0.9961.97490.001361
0.9981.9746870.001355
1.01.9744750.00135
1.0021.9742640.001345
1.0041.9740550.00134
1.0061.9738480.001335
1.0081.9736410.00133
1.011.9734360.001325
1.0121.9732330.00132
1.0141.9730310.001316
1.0161.972830.001311
1.0181.9726310.001306
1.021.9724330.001301
1.0221.9722360.001297
1.0241.9720410.001292
1.0261.9718470.001287
1.0281.9716540.001283
1.031.9714630.001278
1.0321.9712730.001274
1.0341.9710840.001269
1.0361.9708960.001265
1.0381.970710.00126
1.041.9705250.001256
1.0421.9703410.001252
1.0441.9701580.001247
1.0461.9699760.001243
1.0481.9697960.001239
1.051.9696170.001235
1.0521.9694390.00123
1.0541.9692620.001226
1.0561.9690860.001222
1.0581.9689110.001218
1.061.9687380.001214
1.0621.9685650.00121
1.0641.9683940.001206
1.0661.9682240.001202
1.0681.9680550.001198
1.071.9678870.001194
1.0721.967720.00119
1.0741.9675540.001186
1.0761.9673890.001182
1.0781.9672250.001179
1.081.9670620.001175
1.0821.96690.001171
1.0841.9667390.001167
1.0861.966580.001164
1.0881.9664210.00116
1.091.9662630.001156
1.0921.9661060.001153
1.0941.965950.001149
1.0961.9657950.001145
1.0981.9656410.001142
1.11.9654880.001138
1.1021.9653360.001135
1.1041.9651850.001131
1.1061.9650340.001128
1.1081.9648850.001124
1.111.9647370.001121
1.1121.9645890.001118
1.1141.9644420.001114
1.1161.9642970.001111
1.1181.9641520.001107
1.121.9640080.001104
1.1221.9638640.001101
1.1241.9637220.001098
1.1261.963580.001094
1.1281.963440.001091
1.131.96330.001088
1.1321.9631610.001085
1.1341.9630230.001082
1.1361.9628850.001078
1.1381.9627490.001075
1.141.9626130.001072
1.1421.9624780.001069
1.1441.9623440.001066
1.1461.962210.001063
1.1481.9620780.00106
1.151.9619460.001057
1.1521.9618150.001054
1.1541.9616840.001051
1.1561.9615550.001048
1.1581.9614260.001045
1.161.9612980.001042
1.1621.961170.001039
1.1641.9610440.001036
1.1661.9609180.001033
1.1681.9607930.001031
1.171.9606680.001028
1.1721.9605440.001025
1.1741.9604210.001022
1.1761.9602990.001019
1.1781.9601770.001017
1.181.9600560.001014
1.1821.9599350.001011
1.1841.9598160.001008
1.1861.9596970.001006
1.1881.9595780.001003
1.191.959460.001
1.1921.9593430.000998
1.1941.9592270.000995
1.1961.9591110.000992
1.1981.9589960.00099
1.21.9588810.000987
1.2021.9587680.000985
1.2041.9586540.000982
1.2061.9585420.000979
1.2081.958430.000977
1.211.9583180.000974
1.2121.9582070.000972
1.2141.9580970.000969
1.2161.9579870.000967
1.2181.9578780.000964
1.221.957770.000962
1.2221.9576620.00096
1.2241.9575550.000957
1.2261.9574480.000955
1.2281.9573420.000952
1.231.9572360.00095
1.2321.9571310.000948
1.2341.9570270.000945
1.2361.9569230.000943
1.2381.956820.00094
1.241.9567170.000938
1.2421.9566140.000936
1.2441.9565130.000934
1.2461.9564110.000931
1.2481.9563110.000929
1.251.9562110.000927
1.2521.9561110.000924
1.2541.9560120.000922
1.2561.9559130.00092
1.2581.9558150.000918
1.261.9557180.000916
1.2621.9556210.000913
1.2641.9555240.000911
1.2661.9554280.000909
1.2681.9553320.000907
1.271.9552370.000905
1.2721.9551420.000903
1.2741.9550480.0009
1.2761.9549550.000898
1.2781.9548620.000896
1.281.9547690.000894
1.2821.9546770.000892
1.2841.9545850.00089
1.2861.9544940.000888
1.2881.9544030.000886
1.291.9543120.000884
1.2921.9542220.000882
1.2941.9541330.00088
1.2961.9540440.000878
1.2981.9539550.000876
1.31.9538670.000874
1.3021.953780.000872
1.3041.9536920.00087
1.3061.9536050.000868
1.3081.9535190.000866
1.311.9534330.000864
1.3121.9533480.000862
1.3141.9532620.00086
1.3161.9531780.000858
1.3181.9530930.000856
1.321.9530090.000854
1.3221.9529260.000852
1.3241.9528430.000851
1.3261.952760.000849
1.3281.9526780.000847
1.331.9525960.000845
1.3321.9525150.000843
1.3341.9524340.000841
1.3361.9523530.000839
1.3381.9522730.000838
1.341.9521930.000836
1.3421.9521130.000834
1.3441.9520340.000832
1.3461.9519550.00083
1.3481.9518770.000829
1.351.9517990.000827
1.3521.9517210.000825
1.3541.9516440.000823
1.3561.9515670.000822
1.3581.9514910.00082
1.361.9514140.000818
1.3621.9513390.000816
1.3641.9512630.000815
1.3661.9511880.000813
1.3681.9511130.000811
1.371.9510390.00081
1.3721.9509650.000808
1.3741.9508910.000806
1.3761.9508180.000805
1.3781.9507450.000803
1.381.9506720.000801
1.3821.95060.0008
1.3841.9505280.000798
1.3861.9504560.000796
1.3881.9503850.000795
1.391.9503140.000793
1.3921.9502430.000792
1.3941.9501730.00079
1.3961.9501030.000788
1.3981.9500330.000787
1.41.9499640.000785
1.4021.9498950.000784
1.4041.9498260.000782
1.4061.9497570.000781
1.4081.9496890.000779
1.411.9496210.000777
1.4121.9495540.000776
1.4141.9494870.000774
1.4161.949420.000773
1.4181.9493530.000771
1.421.9492870.00077
1.4221.9492210.000768
1.4241.9491550.000767
1.4261.949090.000765
1.4281.9490250.000764
1.431.948960.000762
1.4321.9488950.000761
1.4341.9488310.000759
1.4361.9487670.000758
1.4381.9487030.000756
1.441.948640.000755
1.4421.9485770.000754
1.4441.9485140.000752
1.4461.9484510.000751
1.4481.9483890.000749
1.451.9483270.000748
1.4521.9482650.000746
1.4541.9482040.000745
1.4561.9481430.000744
1.4581.9480820.000742
1.461.9480210.000741
1.4621.9479610.000739
1.4641.9479010.000738
1.4661.9478410.000737
1.4681.9477810.000735
1.471.9477220.000734
1.4721.9476620.000733
1.4741.9476040.000731
1.4761.9475450.00073
1.4781.9474870.000729
1.481.9474290.000727
1.4821.9473710.000726
1.4841.9473130.000725
1.4861.9472560.000723
1.4881.9471990.000722
1.491.9471420.000721
1.4921.9470850.000719
1.4941.9470290.000718
1.4961.9469730.000717
1.4981.9469170.000715
1.51.9468610.000714
1.5021.9468060.000713
1.5041.946750.000712
1.5061.9466950.00071
1.5081.9466410.000709
1.511.9465860.000708
1.5121.9465320.000706
1.5141.9464780.000705
1.5161.9464240.000704
1.5181.946370.000703
1.521.9463170.000702
1.5221.9462640.0007
1.5241.9462110.000699
1.5261.9461580.000698
1.5281.9461060.000697
1.531.9460540.000695
1.5321.9460010.000694
1.5341.945950.000693
1.5361.9458980.000692
1.5381.9458470.000691
1.541.9457950.000689
1.5421.9457440.000688
1.5441.9456930.000687
1.5461.9456430.000686
1.5481.9455930.000685
1.551.9455420.000683
1.5521.9454920.000682
1.5541.9454430.000681
1.5561.9453930.00068
1.5581.9453440.000679
1.561.9452950.000678
1.5621.9452460.000677
1.5641.9451970.000675
1.5661.9451480.000674
1.5681.94510.000673
1.571.9450520.000672
1.5721.9450040.000671
1.5741.9449560.00067
1.5761.9449080.000669
1.5781.9448610.000668
1.581.9448140.000666
1.5821.9447670.000665
1.5841.944720.000664
1.5861.9446730.000663
1.5881.9446270.000662
1.591.944580.000661
1.5921.9445340.00066
1.5941.9444880.000659
1.5961.9444430.000658
1.5981.9443970.000657
1.61.9443520.000656
1.6021.9443060.000654
1.6041.9442620.000653
1.6061.9442170.000652
1.6081.9441720.000651
1.611.9441270.00065
1.6121.9440830.000649
1.6141.9440390.000648
1.6161.9439950.000647
1.6181.9439510.000646
1.621.9439080.000645
1.6221.9438640.000644
1.6241.9438210.000643
1.6261.9437780.000642
1.6281.9437350.000641
1.631.9436920.00064
1.6321.9436490.000639
1.6341.9436070.000638
1.6361.9435650.000637
1.6381.9435220.000636
1.641.943480.000635
1.6421.9434390.000634
1.6441.9433970.000633
1.6461.9433550.000632
1.6481.9433140.000631
1.651.9432730.00063
1.6521.9432320.000629
1.6541.9431910.000628
1.6561.943150.000627
1.6581.943110.000626
1.661.9430690.000625
1.6621.9430290.000624
1.6641.9429890.000623
1.6661.9429490.000622
1.6681.9429090.000621
1.671.9428690.00062
1.6721.942830.000619
1.6741.9427910.000618
1.6761.9427510.000618
1.6781.9427120.000617
1.681.9426730.000616
1.6821.9426350.000615
1.6841.9425960.000614
1.6861.9425570.000613
1.6881.9425190.000612
1.691.9424810.000611
1.6921.9424430.00061
1.6941.9424050.000609
1.6961.9423670.000608
1.6981.9423290.000607

Optical transmission calculator

Free-standing sample in vacuum, normal incidence
Method
Transmittance T
—
Reflectance R
—

Fresnel reflection calculator

Direction
Rp
—
Rs
—
R = (Rp+Rs)/2
—
Phase φp
—
Phase φs
—
Brewster angle θB
—
Critical angle θC
—