Schott LaSF N9, 404nm - 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	1.97888194E+00;
B2	3.20435298E-01;
B3	1.92900751E+00;
C1	1.18537266E-02;
C2	5.27381770E-02;
C3	1.66256540E+02;