Cadmium optical constants (from JAW)
nm
NK
300.   .2731451      2.043854
312.   .2958922      2.132329
324    .3242318      2.224996
336.   .3494532      2.327908
348.   .3557135      2.430452
360.   .4001588      2.513619
372.   .4221966      2.59796
384.   .4484569      2.714849
396.   .4726475      2.807586
408.   .5343674      2.891218
420.   .5585033      2.983329
432.   .5828738      3.08454
444.   .6253347      3.163199
456.   .6597214      3.27665
468.   .7099096      3.36916
480.   .7356867      3.498677
492.   .7936487      3.595369
504.   .8384101      3.69077
516.   .8813841      3.793839
528.   .9433123      3.883135
540.   .983524       3.976996
552.   1.052017      4.078892
564.   1.117865      4.13347
576.   1.155152      4.250072
588.   1.233286      4.352103
600.   1.304654      4.441124
612.   1.344319      4.512177
624.   1.416998      4.611227
636.   1.468619      4.659833
648.   1.552231      4.801725
660.   1.619561      4.845784
672.   1.71406       4.917513
684.   1.813847      5.007179
696.   1.933218      5.085877
708.   1.981963      5.127751
720.   2.146982      5.193352
732.   2.237647      5.212203
744.   2.323037      5.247934
756.   2.390041      5.330488
768.   2.506907      5.334173
780.   2.563455      5.334655
792.   2.671232      5.379142
804.   2.780811      5.435213
816.   2.871752      5.458996
828.   2.924222      5.431406
840.   3.022969      5.45344
852.   3.087722      5.499805
864.   3.180107      5.523358
876.   3.193144      5.422034
888.   3.26276       5.461146
900.   2.8136        5.40158