Schott LaF 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	1.73155854E+00;
B2	1.50874455E-01;
B3	1.06586596E+00;
C1	9.53833914E-03;
C2	4.07887211E-02;
C3	9.80758545E+01;