Schott LaSF 3, 365nm - 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	1.95904308E+00;
B2	2.19800634E-01;
B3	1.33464105E+00;
C1	1.04346704E-02;
C2	4.65504111E-02;
C3	8.79058457E+01;