# data from www.luxpop.com database
# ;  Optical constants for VN
# ; 
# ;   taken from:
# ;
# ;   'Handbook of Optical Constants of Solids II', Ed. by Edward D. Palik,
# ;   Academic Press, Inc., 1991.
# ;   
# ;    Lambda (A)            n            k
# ;-----------------------------------------
309.950012 2.200000
354.229004 2.180000
413.266998 2.130000
495.920013 2.170000
619.900024 2.350000
826.533020 2.730000