Schott FK52, 313nm - 2325nm
USER
2 1
SQRT(1+B1*wvl^2/(wvl^2-C1)+B2*wvl^2/(wvl^2-C2)+B3*wvl^2/(wvl^2-C3))
0
B1 1.015711e+000
C1 5.158849e-003
B2 1.699984e-001
C2 1.733808e-002
B3 8.051585e-001
C3 1.586033e+002