Schott LaF 2, 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	1.75302282E+00;
B2	2.13978997E-01;
B3	1.09939444E+00;
C1	9.57243296E-03;
C2	4.02787459E-02;
C3	1.02533259E+02;