Tellurium optical constants (JAW)
nm
NK
300.   .5638549      1.742301
312.   .6043133      1.923445
324.   .6778305      2.063943
336.   .7400764      2.177436
348.   .8137273      2.355046
360.   .891962       2.505299
372.   .9971942      2.609711
384.   1.087227      2.715091
396.   1.196326      2.832623
408.   1.312334      2.94123
420.   1.422916      3.023697
432.   1.547505      3.126119
444.   1.674912      3.208461
456.   1.79496       3.276383
468.   1.909315      3.3696
480.   2.015565      3.437035
492.   2.156687      3.52341
504.   2.290898      3.571971
516.   2.423772      3.649442
528.   2.565106      3.677698
540.   2.699503      3.736814
552.   2.827718      3.742436
564.   2.970014      3.760325
576.   3.128124      3.791405
588.   3.296699      3.758293
600.   3.472882      3.764369
612.   3.579591      3.729891
624.   3.72622       3.683974
636.   3.865747      3.666536
648.   4.010195      3.594409
660.   4.143184      3.540253
672.   4.243994      3.410584
684.   4.319973      3.361445
696.   4.404658      3.282243
708.   4.462234      3.207154
720.   4.529978      3.117737
732.   4.558445      3.057353
744.   4.581157      2.971103
756.   4.609647      2.921836
768.   4.629551      2.852099
780.   4.680723      2.842053
792.   4.677707      2.767651
804.   4.685133      2.740485
816.   4.719475      2.690647
828.   4.711637      2.640596
840.   4.680688      2.618624
852.   4.658596      2.610729
864.   4.59173       2.702416
876.   4.672147      2.699754
888.   4.583576      2.720687
900.   4.199521      2.724431