# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    M. R. Querry. Optical constants, <a href="https://apps.dtic.mil/sti/citations/ADA158623"><i>Contractor Report</i> CRDC-CR-85034 (1985)</a>
DATA:
  - type: tabulated nk
    data: |
        0.2100 1.141 1.305
        0.2200 1.125 1.347
        0.2300 1.110 1.408
        0.2400 1.104 1.480
        0.2500 1.109 1.553
        0.2600 1.117 1.621
        0.2700 1.127 1.690
        0.2800 1.134 1.757
        0.2900 1.142 1.829
        0.3000 1.155 1.902
        0.3100 1.164 1.976
        0.3200 1.179 2.061
        0.3300 1.207 2.141
        0.3400 1.234 2.217
        0.3500 1.262 2.295
        0.3600 1.296 2.375
        0.3700 1.339 2.454
        0.3800 1.390 2.526
        0.3900 1.442 2.588
        0.4000 1.492 2.644
        0.4100 1.538 2.698
        0.4200 1.583 2.753
        0.4300 1.631 2.806
        0.4400 1.682 2.858
        0.4500 1.736 2.906
        0.4600 1.790 2.949
        0.4700 1.846 2.989
        0.4800 1.903 3.019
        0.4900 1.952 3.043
        0.5000 1.996 3.067
        0.5100 2.039 3.091
        0.5200 2.080 3.113
        0.5300 2.119 3.134
        0.5400 2.156 3.153
        0.5500 2.189 3.171
        0.5600 2.219 3.190
        0.5700 2.252 3.210
        0.5800 2.281 3.223
        0.5900 2.305 3.241
        0.6000 2.328 3.259
        0.6100 2.350 3.277
        0.6200 2.370 3.297
        0.6300 2.391 3.317
        0.6400 2.408 3.336
        0.6500 2.427 3.361
        0.6600 2.448 3.383
        0.6700 2.468 3.404
        0.6800 2.486 3.423
        0.6900 2.503 3.443
        0.7000 2.519 3.463
        0.7100 2.533 3.485
        0.7200 2.549 3.507
        0.7300 2.564 3.527
        0.7400 2.577 3.549
        0.7500 2.587 3.569
        0.7600 2.597 3.595
        0.7700 2.611 3.619
        0.7800 2.623 3.642
        0.7900 2.633 3.669
        0.8000 2.649 3.693
        0.8100 2.657 3.714
        0.8200 2.666 3.741
        0.8300 2.678 3.769
        0.8400 2.689 3.795
        0.8500 2.700 3.822
        0.8600 2.713 3.852
        0.8700 2.729 3.879
        0.8800 2.742 3.903
        0.8900 2.757 3.926
        0.9000 2.766 3.948
        0.9100 2.777 3.976
        0.9200 2.790 4.001
        0.9300 2.802 4.026
        0.9400 2.812 4.047
        0.9500 2.821 4.075
        0.9600 2.836 4.099
        0.9700 2.845 4.122
        0.9800 2.857 4.145
        0.9900 2.863 4.164
        1.0000 2.868 4.192
        1.0100 2.877 4.216
        1.0200 2.883 4.243
        1.0300 2.891 4.270
        1.0400 2.899 4.299
        1.0500 2.910 4.325
        1.0600 2.918 4.350
        1.0700 2.927 4.377
        1.0800 2.937 4.405
        1.0900 2.948 4.431
        1.1000 2.957 4.454
        1.1100 2.965 4.479
        1.1200 2.972 4.503
        1.1300 2.980 4.530
        1.1400 2.987 4.556
        1.1500 2.996 4.581
        1.1600 3.002 4.605
        1.1700 3.009 4.632
        1.1800 3.016 4.656
        1.1900 3.028 4.681
        1.2000 3.022 4.699
        1.2100 3.018 4.743
        1.2200 3.036 4.773
        1.2300 3.046 4.800
        1.2400 3.056 4.827
        1.2500 3.064 4.852
        1.2600 3.071 4.880
        1.2700 3.083 4.908
        1.2800 3.091 4.931
        1.2900 3.096 4.957
        1.3000 3.105 4.985
        1.3100 3.114 5.008
        1.3200 3.118 5.034
        1.3300 3.125 5.061
        1.3400 3.135 5.086
        1.3500 3.141 5.109
        1.3600 3.145 5.133
        1.3700 3.148 5.159
        1.3800 3.151 5.188
        1.3900 3.156 5.217
        1.4000 3.162 5.246
        1.4100 3.170 5.273
        1.4200 3.176 5.300
        1.4300 3.181 5.327
        1.4400 3.186 5.355
        1.4500 3.194 5.385
        1.4600 3.201 5.410
        1.4700 3.205 5.438
        1.4800 3.212 5.469
        1.4900 3.221 5.496
        1.5000 3.229 5.522
        1.5100 3.234 5.549
        1.5200 3.242 5.578
        1.5300 3.251 5.600
        1.5400 3.253 5.627
        1.5500 3.260 5.657
        1.5600 3.270 5.683
        1.5700 3.275 5.707
        1.5800 3.281 5.733
        1.5900 3.286 5.759
        1.6000 3.294 5.784
        1.6100 3.296 5.809
        1.6200 3.301 5.837
        1.6300 3.307 5.863
        1.6400 3.311 5.889
        1.6500 3.315 5.915
        1.6600 3.318 5.941
        1.6700 3.323 5.970
        1.6800 3.326 5.996
        1.6900 3.329 6.027
        1.7000 3.335 6.052
        1.7100 3.338 6.080
        1.7200 3.343 6.109
        1.7300 3.347 6.136
        1.7400 3.351 6.167
        1.7500 3.356 6.196
        1.7600 3.363 6.224
        1.7700 3.367 6.251
        1.7800 3.370 6.281
        1.7900 3.376 6.311
        1.8000 3.382 6.342
        1.8100 3.392 6.370
        1.8200 3.397 6.396
        1.8300 3.402 6.424
        1.8400 3.406 6.454
        1.8500 3.414 6.486
        1.8600 3.428 6.511
        1.8700 3.431 6.534
        1.8800 3.438 6.561
        1.8900 3.442 6.586
        1.9000 3.447 6.612
        1.9100 3.450 6.636
        1.9200 3.449 6.667
        1.9300 3.456 6.699
        1.9400 3.463 6.728
        1.9500 3.470 6.755
        1.9600 3.478 6.782
        1.9700 3.484 6.806
        1.9800 3.487 6.831
        1.9900 3.494 6.855
        2.0000 3.483 6.879
        2.0100 3.483 6.927
        2.0200 3.500 6.956
        2.0300 3.507 6.981
        2.0400 3.512 7.012
        2.0500 3.522 7.042
        2.0600 3.531 7.068
        2.0700 3.538 7.094
        2.0800 3.542 7.120
        2.0900 3.550 7.151
        2.1000 3.559 7.175
        2.1100 3.563 7.199
        2.1200 3.569 7.227
        2.1300 3.572 7.254
        2.1400 3.578 7.291
        2.1500 3.583 7.309
        2.1600 3.589 7.338
        2.1700 3.598 7.366
        2.1800 3.606 7.390
        2.1900 3.611 7.415
        2.2000 3.616 7.440
        2.2100 3.621 7.466
        2.2200 3.624 7.491
        2.2300 3.626 7.519
        2.2400 3.632 7.548
        2.2500 3.640 7.573
        2.2600 3.644 7.599
        2.2700 3.647 7.626
        2.2800 3.654 7.652
        2.2900 3.656 7.677
        2.3000 3.660 7.705
        2.3100 3.662 7.732
        2.3200 3.665 7.763
        2.3300 3.671 7.790
        2.3400 3.674 7.820
        2.3500 3.680 7.849
        2.3600 3.689 7.877
        2.3700 3.691 7.903
        2.3800 3.696 7.936
        2.3900 3.705 7.966
        2.4000 3.715 7.991
        2.4100 3.720 8.014
        2.4200 3.723 8.042
        2.4300 3.730 8.071
        2.4400 3.738 8.095
        2.4500 3.741 8.120
        2.4600 3.741 8.149
        2.4700 3.744 8.183
        2.4800 3.752 8.216
        2.4900 3.763 8.247
        2.5063 3.789 8.294
        2.5126 3.797 8.307
        2.5189 3.805 8.320
        2.5253 3.811 8.333
        2.5316 3.816 8.346
        2.5381 3.821 8.358
        2.5445 3.825 8.372
        2.5510 3.829 8.385
        2.5575 3.832 8.398
        2.5641 3.835 8.412
        2.5707 3.837 8.426
        2.5773 3.839 8.440
        2.5840 3.840 8.455
        2.5907 3.842 8.470
        2.5974 3.843 8.485
        2.6042 3.844 8.502
        2.6110 3.845 8.518
        2.6178 3.846 8.535
        2.6247 3.848 8.553
        2.6316 3.850 8.570
        2.6385 3.851 8.588
        2.6455 3.853 8.606
        2.6525 3.855 8.624
        2.6596 3.857 8.642
        2.6667 3.859 8.660
        2.6738 3.861 8.679
        2.6810 3.863 8.697
        2.6882 3.865 8.716
        2.6954 3.866 8.735
        2.7027 3.868 8.754
        2.7100 3.870 8.774
        2.7174 3.873 8.794
        2.7248 3.875 8.814
        2.7322 3.877 8.834
        2.7397 3.880 8.854
        2.7473 3.882 8.874
        2.7548 3.885 8.895
        2.7624 3.888 8.915
        2.7701 3.891 8.936
        2.7778 3.894 8.957
        2.7855 3.897 8.978
        2.7933 3.901 8.999
        2.8011 3.904 9.020
        2.8090 3.908 9.041
        2.8169 3.912 9.062
        2.8249 3.916 9.083
        2.8329 3.919 9.104
        2.8409 3.923 9.125
        2.8490 3.926 9.146
        2.8571 3.930 9.167
        2.8653 3.934 9.189
        2.8736 3.938 9.211
        2.8818 3.942 9.232
        2.8902 3.946 9.254
        2.8986 3.950 9.275
        2.9070 3.954 9.296
        2.9155 3.958 9.318
        2.9240 3.961 9.340
        2.9326 3.965 9.362
        2.9412 3.970 9.383
        2.9499 3.973 9.405
        2.9586 3.977 9.426
        2.9674 3.981 9.448
        2.9762 3.985 9.471
        2.9851 3.989 9.493
        2.9940 3.993 9.514
        3.0030 3.996 9.536
        3.0120 4.000 9.558
        3.0211 4.003 9.580
        3.0303 4.006 9.602
        3.0395 4.008 9.624
        3.0488 4.011 9.647
        3.0581 4.013 9.670
        3.0675 4.015 9.693
        3.0769 4.018 9.717
        3.0864 4.020 9.741
        3.0960 4.023 9.765
        3.1056 4.026 9.789
        3.1153 4.028 9.812
        3.1250 4.031 9.836
        3.1348 4.033 9.860
        3.1447 4.034 9.865
        3.1546 4.036 9.910
        3.1646 4.038 9.936
        3.1746 4.040 9.962
        3.1847 4.042 9.988
        3.1949 4.044 10.014
        3.2051 4.046 10.040
        3.2154 4.048 10.067
        3.2258 4.051 10.094
        3.2362 4.052 10.121
        3.2468 4.054 10.100
        3.2573 4.057 10.177
        3.2680 4.059 10.205
        3.2787 4.062 10.233
        3.2895 4.065 10.262
        3.3003 4.068 10.291
        3.3113 4.071 10.320
        3.3223 4.075 10.349
        3.3333 4.079 10.377
        3.3445 4.082 10.406
        3.3557 4.086 10.435
        3.3670 4.089 10.463
        3.3784 4.092 10.492
        3.3898 4.096 10.522
        3.4014 4.099 10.551
        3.4130 4.102 10.581
        3.4247 4.106 10.610
        3.4364 4.109 10.640
        3.4483 4.113 10.670
        3.4602 4.116 10.699
        3.4722 4.119 10.729
        3.4843 4.122 10.759
        3.4965 4.125 10.789
        3.5088 4.128 10.819
        3.5211 4.131 10.849
        3.5336 4.132 10.879
        3.5461 4.134 10.910
        3.5587 4.135 10.941
        3.5714 4.137 10.973
        3.5842 4.139 11.004
        3.5971 4.140 11.036
        3.6101 4.141 11.068
        3.6232 4.141 11.101
        3.6364 4.142 11.134
        3.6496 4.142 11.147
        3.6630 4.141 11.201
        3.6765 4.141 11.237
        3.6900 4.141 11.272
        3.7037 4.142 11.309
        3.7175 4.142 11.345
        3.7313 4.142 11.382
        3.7453 4.143 11.420
        3.7594 4.144 11.457
        3.7736 4.145 11.495
        3.7879 4.145 11.533
        3.8023 4.146 11.572
        3.8168 4.147 11.612
        3.8314 4.141 11.652
        3.8462 4.149 11.692
        3.8610 4.151 11.733
        3.8760 4.153 11.774
        3.8911 4.155 11.815
        3.9063 4.157 11.857
        3.9216 4.159 11.898
        3.9370 4.162 11.940
        3.9526 4.164 11.982
        3.9683 4.166 12.024
        3.9841 4.168 12.068
        4.0000 4.171 12.111
        4.0161 4.174 12.156
        4.0323 4.178 12.200
        4.0486 4.181 12.243
        4.0650 4.185 12.287
        4.0816 4.189 12.330
        4.0984 4.192 12.374
        4.1152 4.195 12.418
        4.1322 4.197 12.462
        4.1494 4.200 12.507
        4.1667 4.203 12.552
        4.1841 4.205 12.597
        4.2017 4.207 12.642
        4.2194 4.208 12.688
        4.2373 4.209 12.734
        4.2553 4.210 12.782
        4.2735 4.211 12.830
        4.2918 4.212 12.878
        4.3103 4.213 12.927
        4.3290 4.214 12.977
        4.3478 4.214 13.026
        4.3668 4.215 13.077
        4.3860 4.215 13.129
        4.4053 4.216 13.181
        4.4248 4.216 13.234
        4.4444 4.217 13.288
        4.4643 4.219 13.341
        4.4843 4.221 13.395
        4.5045 4.223 13.449
        4.5249 4.224 13.503
        4.5455 4.224 13.557
        4.5662 4.224 13.613
        4.5872 4.224 13.669
        4.6083 4.223 13.726
        4.6296 4.222 13.784
        4.6512 4.222 13.843
        4.6729 4.221 13.903
        4.6948 4.221 13.964
        4.7170 4.221 14.025
        4.7393 4.221 14.087
        4.7619 4.221 14.150
        4.7847 4.221 14.213
        4.8077 4.221 14.278
        4.8309 4.221 14.343
        4.8544 4.221 14.409
        4.8780 4.221 14.476
        4.9020 4.221 14.544
        4.9261 4.221 14.613
        4.9505 4.222 14.682
        4.9751 4.224 14.752
        5.0000 4.225 14.823
        5.0251 4.226 14.894
        5.0505 4.227 14.966
        5.0761 4.229 15.039
        5.1020 4.230 15.113
        5.1282 4.232 15.187
        5.1546 4.234 15.262
        5.1813 4.235 15.338
        5.2083 4.237 15.414
        5.2356 4.238 15.492
        5.2632 4.239 15.570
        5.2910 4.240 15.650
        5.3191 4.242 15.731
        5.3476 4.244 15.814
        5.3763 4.247 15.896
        5.4054 4.249 15.980
        5.4348 4.252 16.064
        5.4645 4.254 16.149
        5.4945 4.255 16.236
        5.5249 4.258 16.325
        5.5556 4.261 16.414
        5.5866 4.266 16.504
        5.6180 4.271 16.594
        5.6497 4.276 16.684
        5.6818 4.280 16.774
        5.7143 4.283 16.865
        5.7471 4.284 16.957
        5.7803 4.285 17.052
        5.8140 4.286 17.149
        5.8480 4.288 17.248
        5.8824 4.291 17.348
        5.9172 4.294 17.449
        5.9524 4.296 17.551
        5.9880 4.299 17.655
        6.0241 4.301 17.761
        6.0606 4.305 17.868
        6.0976 4.309 17.976
        6.1350 4.313 18.085
        6.1728 4.316 18.195
        6.2112 4.319 18.307
        6.2500 4.321 18.422
        6.2893 4.324 18.538
        6.3291 4.327 18.656
        6.3694 4.331 18.776
        6.4103 4.334 18.899
        6.4516 4.338 19.025
        6.4935 4.344 19.153
        6.5359 4.351 19.281
        6.5789 4.358 19.412
        6.6225 4.366 19.544
        6.6667 4.374 19.678
        6.7114 4.383 19.814
        6.7568 4.393 19.952
        6.8027 4.405 20.020
        6.8493 4.417 20.233
        6.8966 4.430 20.375
        6.9444 4.442 20.518
        6.9930 4.455 20.664
        7.0423 4.469 20.813
        7.0922 4.484 20.963
        7.1429 4.500 21.115
        7.1942 4.517 21.269
        7.2464 4.534 21.423
        7.2993 4.552 21.580
        7.3529 4.569 21.739
        7.4074 4.587 21.901
        7.4627 4.606 22.065
        7.5188 4.628 22.232
        7.5758 4.652 22.399
        7.6336 4.676 22.565
        7.6923 4.698 22.733
        7.7519 4.718 22.904
        7.8125 4.739 23.080
        7.8740 4.761 23.259
        7.9365 4.786 23.442
        8.0000 4.814 23.626
        8.0645 4.844 23.809
        8.1301 4.873 23.992
        8.1967 4.901 24.177
        8.2645 4.928 24.365
        8.3333 4.955 24.554
        8.4034 4.982 24.746
        8.4746 5.009 24.941
        8.5470 5.036 25.136
        8.6207 5.061 25.334
        8.6957 5.084 25.534
        8.7719 5.104 25.738
        8.8496 5.122 25.946
        8.9286 5.138 26.161
        9.0090 5.155 26.382
        9.0909 5.171 26.608
        9.1743 5.188 26.836
        9.2593 5.205 27.075
        9.3458 5.221 27.317
        9.4340 5.239 27.566
        9.5238 5.259 27.820
        9.6153 5.279 28.078
        9.7087 5.298 28.342
        9.8039 5.318 28.613
        9.9010 5.339 28.891
        10.0000 5.362 29.175
        10.1010 5.387 29.466
        10.2041 5.415 29.762
        10.3093 5.444 30.064
        10.4167 5.475 30.371
        10.5263 5.507 30.682
        10.6383 5.539 30.999
        10.7527 5.569 31.323
        10.8696 5.600 31.654
        10.9890 5.630 31.994
        11.1111 5.662 32.342
        11.2360 5.693 32.699
        11.3636 5.726 33.065
        11.4943 5.760 33.441
        11.6279 5.796 33.827
        11.7647 5.832 34.222
        11.9048 5.867 34.629
        12.0482 5.907 35.050
        12.1951 5.951 35.486
        12.3457 6.005 35.930
        12.5000 6.063 36.380
        12.6582 6.122 36.839
        12.8205 6.181 37.309
        12.9870 6.243 37.793
        13.1579 6.308 38.289
        13.3333 6.379 38.797
        13.5135 6.453 39.316
        13.6986 6.530 39.847
        13.8889 6.609 40.389
        14.0845 6.689 40.946
        14.2857 6.770 41.516
        14.4928 6.851 42.102
        14.7059 6.931 42.706
        14.9254 7.011 43.332
        15.1515 7.095 43.981
        15.3846 7.182 44.654
        15.6250 7.275 45.352
        15.8730 7.379 46.076
        16.1290 7.495 46.822
        16.3934 7.624 47.586
        16.6667 7.758 48.367
        16.9492 7.894 49.168
        17.2414 8.028 49.996
        17.5439 8.167 50.854
        17.8571 8.310 51.742
        18.1818 8.459 52.659
        18.5185 8.604 53.611
        18.8679 8.749 54.608
        19.2308 8.901 55.652
        19.6078 9.066 56.742
        20.0000 9.238 57.878
        20.4082 9.413 59.066
        20.8333 9.589 60.320
        21.2766 9.779 61.651
        21.7391 9.991 63.067
        22.2222 10.249 64.565
        22.7273 10.553 66.135
        23.2558 10.907 67.770
        23.8095 11.294 69.477
        24.3902 11.721 71.267
        25.0000 12.195 73.151
        25.6410 12.729 75.133
        26.3158 13.336 77.211
        27.0270 14.017 79.390
        27.7778 14.786 81.664
        28.5714 15.637 84.044
        29.4118 16.597 86.524
        30.3030 17.653 89.100
        31.2500 18.813 91.768
        32.2581 20.050 94.541
        33.3333 21.354 97.458
        34.4828 22.745 100.563
        35.7143 24.261 103.902
        37.0370 25.982 107.465
        38.4615 27.921 111.240
        40.0000 30.095 115.205
        41.6667 32.461 119.413
        43.4793 35.070 123.929
        45.4545 37.988 128.832
        47.6190 41.364 134.110
        50.0000 45.257 139.754
        52.6316 49.736 145.745
        55.5556 54.848 152.133