# 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: |
    P. G. Zotev, Y. Wang, D. Andres-Penares, T. Severs-Millard, S. Randerson, X. Hu, L. Sortino, C. Louca, M. Brotons-Gisbert, T. Huq, S. Vezzoli, R. Sapienza, T. F. Krauss, B. D. Gerardot, A. I. Tartakovskii.
    Van der Waals materials for applications in nanophotonics.
    <a href="https://doi.org/10.1002/lpor.202200957"><i>Laser and Photonics Rev.</i> <b>17</b>, 2200957 (2023)</a>
    (Numerical data kindly provided by Panaiot Zotev)
COMMENTS: |
    Multilayer crystals. In-plane (ordinary ray, o). Room temperature.
CONDITIONS:
    direction: o
DATA:
  - type: tabulated nk
    data: |
        0.360 3.394 2.390
        0.362 3.415 2.379
        0.363 3.435 2.367
        0.365 3.455 2.356
        0.366 3.474 2.344
        0.368 3.492 2.332
        0.370 3.510 2.320
        0.371 3.527 2.308
        0.373 3.543 2.296
        0.374 3.559 2.284
        0.376 3.574 2.272
        0.378 3.588 2.260
        0.379 3.602 2.249
        0.381 3.615 2.238
        0.382 3.628 2.226
        0.384 3.640 2.216
        0.386 3.652 2.205
        0.387 3.663 2.195
        0.389 3.674 2.185
        0.390 3.684 2.175
        0.392 3.694 2.166
        0.394 3.704 2.157
        0.395 3.714 2.149
        0.397 3.723 2.141
        0.398 3.732 2.133
        0.400 3.741 2.126
        0.402 3.750 2.119
        0.403 3.758 2.112
        0.405 3.767 2.106
        0.406 3.775 2.100
        0.408 3.784 2.095
        0.410 3.792 2.090
        0.411 3.800 2.085
        0.413 3.809 2.081
        0.414 3.818 2.077
        0.416 3.827 2.073
        0.418 3.835 2.070
        0.419 3.845 2.067
        0.421 3.854 2.064
        0.422 3.864 2.062
        0.424 3.874 2.059
        0.426 3.884 2.057
        0.427 3.894 2.055
        0.429 3.905 2.054
        0.430 3.916 2.052
        0.432 3.927 2.050
        0.434 3.939 2.048
        0.435 3.952 2.047
        0.437 3.964 2.045
        0.438 3.977 2.043
        0.440 3.990 2.041
        0.442 4.004 2.039
        0.443 4.017 2.037
        0.445 4.032 2.034
        0.446 4.046 2.032
        0.448 4.061 2.029
        0.450 4.076 2.025
        0.451 4.092 2.022
        0.453 4.107 2.018
        0.454 4.123 2.014
        0.456 4.139 2.009
        0.458 4.155 2.003
        0.459 4.172 1.998
        0.461 4.188 1.992
        0.462 4.205 1.985
        0.464 4.221 1.978
        0.466 4.238 1.970
        0.467 4.254 1.962
        0.469 4.271 1.954
        0.470 4.287 1.944
        0.472 4.303 1.935
        0.474 4.319 1.925
        0.475 4.334 1.914
        0.477 4.350 1.903
        0.478 4.365 1.892
        0.480 4.380 1.880
        0.482 4.394 1.867
        0.483 4.408 1.854
        0.485 4.422 1.841
        0.486 4.435 1.828
        0.488 4.448 1.814
        0.490 4.460 1.800
        0.491 4.472 1.786
        0.493 4.483 1.771
        0.494 4.494 1.756
        0.496 4.504 1.741
        0.498 4.514 1.726
        0.499 4.523 1.711
        0.501 4.532 1.696
        0.502 4.540 1.680
        0.504 4.548 1.665
        0.506 4.555 1.650
        0.507 4.561 1.635
        0.509 4.567 1.620
        0.510 4.573 1.605
        0.512 4.577 1.590
        0.514 4.582 1.576
        0.515 4.586 1.561
        0.517 4.589 1.547
        0.518 4.592 1.533
        0.520 4.594 1.520
        0.522 4.596 1.507
        0.523 4.598 1.494
        0.525 4.599 1.482
        0.526 4.600 1.470
        0.528 4.601 1.459
        0.530 4.601 1.448
        0.531 4.601 1.438
        0.532 4.600 1.433
        0.533 4.600 1.428
        0.534 4.600 1.419
        0.536 4.599 1.411
        0.538 4.599 1.403
        0.539 4.598 1.397
        0.541 4.597 1.390
        0.542 4.596 1.385
        0.544 4.596 1.380
        0.546 4.595 1.377
        0.547 4.595 1.374
        0.549 4.596 1.372
        0.550 4.597 1.371
        0.552 4.599 1.370
        0.554 4.602 1.371
        0.555 4.605 1.372
        0.557 4.610 1.374
        0.558 4.616 1.377
        0.560 4.624 1.380
        0.562 4.633 1.383
        0.563 4.644 1.387
        0.565 4.658 1.390
        0.566 4.673 1.393
        0.568 4.690 1.395
        0.570 4.710 1.396
        0.571 4.732 1.395
        0.573 4.755 1.392
        0.574 4.780 1.386
        0.576 4.806 1.378
        0.578 4.832 1.366
        0.579 4.859 1.352
        0.581 4.886 1.333
        0.582 4.911 1.312
        0.584 4.935 1.287
        0.586 4.956 1.260
        0.587 4.975 1.230
        0.589 4.991 1.199
        0.590 5.004 1.166
        0.592 5.015 1.132
        0.594 5.021 1.099
        0.595 5.026 1.065
        0.597 5.028 1.032
        0.598 5.026 1.000
        0.600 5.024 0.969
        0.602 5.019 0.939
        0.603 5.013 0.910
        0.605 5.005 0.883
        0.606 4.996 0.857
        0.608 4.987 0.833
        0.610 4.976 0.810
        0.611 4.965 0.788
        0.613 4.954 0.768
        0.614 4.942 0.748
        0.616 4.930 0.730
        0.618 4.918 0.713
        0.619 4.906 0.697
        0.621 4.893 0.682
        0.622 4.881 0.667
        0.624 4.869 0.654
        0.626 4.857 0.641
        0.627 4.845 0.628
        0.629 4.833 0.617
        0.630 4.822 0.606
        0.632 4.810 0.595
        0.634 4.798 0.585
        0.635 4.787 0.576
        0.637 4.776 0.567
        0.638 4.765 0.558
        0.640 4.754 0.550
        0.642 4.743 0.542
        0.643 4.732 0.534
        0.645 4.722 0.527
        0.646 4.711 0.520
        0.648 4.701 0.514
        0.650 4.691 0.507
        0.651 4.681 0.501
        0.653 4.671 0.496
        0.654 4.661 0.490
        0.656 4.651 0.485
        0.658 4.641 0.480
        0.659 4.631 0.475
        0.661 4.622 0.470
        0.662 4.612 0.466
        0.664 4.602 0.461
        0.666 4.593 0.457
        0.667 4.583 0.454
        0.669 4.574 0.450
        0.670 4.564 0.447
        0.672 4.555 0.443
        0.674 4.545 0.440
        0.675 4.536 0.438
        0.677 4.526 0.435
        0.678 4.517 0.433
        0.680 4.507 0.430
        0.682 4.498 0.428
        0.683 4.488 0.427
        0.685 4.479 0.425
        0.686 4.469 0.424
        0.688 4.459 0.423
        0.690 4.449 0.422
        0.691 4.439 0.422
        0.693 4.429 0.422
        0.694 4.419 0.422
        0.696 4.409 0.422
        0.698 4.399 0.423
        0.699 4.388 0.424
        0.701 4.377 0.426
        0.702 4.367 0.428
        0.704 4.356 0.430
        0.706 4.345 0.433
        0.707 4.333 0.436
        0.709 4.322 0.440
        0.710 4.310 0.445
        0.712 4.298 0.450
        0.714 4.286 0.457
        0.715 4.274 0.463
        0.717 4.261 0.471
        0.718 4.249 0.480
        0.720 4.236 0.490
        0.722 4.223 0.502
        0.723 4.210 0.514
        0.725 4.197 0.528
        0.726 4.185 0.544
        0.728 4.172 0.562
        0.730 4.160 0.582
        0.731 4.148 0.605
        0.733 4.138 0.630
        0.734 4.128 0.658
        0.736 4.121 0.689
        0.738 4.116 0.723
        0.739 4.113 0.761
        0.741 4.115 0.802
        0.742 4.122 0.847
        0.744 4.135 0.895
        0.746 4.156 0.945
        0.747 4.185 0.995
        0.749 4.224 1.046
        0.750 4.274 1.093
        0.752 4.333 1.135
        0.754 4.404 1.168
        0.755 4.483 1.188
        0.757 4.568 1.195
        0.758 4.653 1.187
        0.760 4.735 1.162
        0.762 4.812 1.123
        0.763 4.878 1.073
        0.765 4.932 1.014
        0.766 4.975 0.950
        0.768 5.006 0.884
        0.770 5.027 0.819
        0.771 5.036 0.757
        0.773 5.038 0.698
        0.774 5.034 0.645
        0.776 5.026 0.596
        0.778 5.015 0.552
        0.779 5.000 0.512
        0.781 4.984 0.477
        0.782 4.968 0.445
        0.784 4.951 0.417
        0.786 4.933 0.392
        0.787 4.916 0.369
        0.789 4.898 0.349
        0.790 4.881 0.331
        0.792 4.865 0.315
        0.794 4.849 0.300
        0.795 4.833 0.287
        0.797 4.819 0.274
        0.798 4.804 0.263
        0.800 4.790 0.253
        0.802 4.777 0.244
        0.803 4.764 0.236
        0.805 4.752 0.228
        0.806 4.740 0.220
        0.808 4.728 0.214
        0.810 4.717 0.208
        0.811 4.707 0.202
        0.813 4.696 0.196
        0.814 4.686 0.191
        0.816 4.677 0.187
        0.818 4.667 0.182
        0.819 4.658 0.178
        0.821 4.650 0.174
        0.822 4.641 0.170
        0.824 4.633 0.167
        0.826 4.625 0.163
        0.827 4.618 0.160
        0.829 4.610 0.157
        0.830 4.603 0.154
        0.832 4.596 0.151
        0.834 4.589 0.149
        0.835 4.582 0.146
        0.837 4.576 0.144
        0.838 4.570 0.141
        0.840 4.563 0.139
        0.842 4.557 0.137
        0.843 4.552 0.135
        0.845 4.546 0.133
        0.846 4.540 0.131
        0.848 4.535 0.129
        0.850 4.529 0.127
        0.851 4.524 0.125
        0.853 4.519 0.124
        0.854 4.514 0.122
        0.856 4.509 0.120
        0.858 4.504 0.119
        0.859 4.500 0.117
        0.861 4.495 0.116
        0.862 4.490 0.114
        0.864 4.486 0.113
        0.866 4.482 0.111
        0.867 4.477 0.110
        0.869 4.473 0.109
        0.870 4.469 0.107
        0.872 4.465 0.106
        0.874 4.461 0.105
        0.875 4.457 0.104
        0.877 4.453 0.103
        0.878 4.449 0.101
        0.880 4.446 0.100
        0.882 4.442 0.099
        0.883 4.438 0.098
        0.885 4.435 0.097
        0.886 4.431 0.096
        0.888 4.428 0.095
        0.890 4.424 0.094
        0.891 4.421 0.093
        0.893 4.417 0.092
        0.894 4.414 0.091
        0.896 4.411 0.090
        0.898 4.408 0.089
        0.899 4.405 0.088
        0.901 4.401 0.087
        0.902 4.398 0.086
        0.904 4.395 0.085
        0.906 4.392 0.085
        0.907 4.389 0.084
        0.909 4.386 0.083
        0.910 4.383 0.082
        0.912 4.381 0.081
        0.914 4.378 0.080
        0.915 4.375 0.080
        0.917 4.372 0.079
        0.918 4.370 0.078
        0.920 4.367 0.077
        0.922 4.364 0.077
        0.923 4.362 0.076
        0.925 4.359 0.075
        0.926 4.356 0.074
        0.928 4.354 0.074
        0.930 4.351 0.073
        0.931 4.349 0.072
        0.933 4.346 0.072
        0.934 4.344 0.071
        0.936 4.342 0.070
        0.938 4.339 0.070
        0.939 4.337 0.069
        0.941 4.334 0.069
        0.942 4.332 0.068
        0.944 4.330 0.067
        0.946 4.327 0.067
        0.947 4.325 0.066
        0.949 4.323 0.066
        0.950 4.321 0.065
        0.952 4.319 0.064
        0.954 4.316 0.064
        0.955 4.314 0.063
        0.957 4.312 0.063
        0.958 4.310 0.062
        0.960 4.308 0.062
        0.962 4.306 0.061
        0.963 4.304 0.061
        0.965 4.302 0.060
        0.966 4.300 0.060
        0.968 4.298 0.059
        0.970 4.296 0.059
        0.971 4.294 0.058
        0.973 4.292 0.058
        0.974 4.290 0.057
        0.976 4.288 0.057
        0.978 4.286 0.056
        0.979 4.284 0.056
        0.981 4.283 0.055
        0.982 4.281 0.055
        0.984 4.279 0.054
        0.986 4.277 0.054
        0.987 4.275 0.054
        0.989 4.273 0.053
        0.990 4.272 0.053
        0.992 4.270 0.052
        0.994 4.268 0.052
        0.995 4.266 0.052
        0.997 4.265 0.051
        0.998 4.263 0.051
        1.000 4.261 0.050