Schott BaF 51, 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	1.53230421E+00;
B2	1.36199171E-01;
B3	1.12286850E+00;
C1	9.68269679E-03;
C2	4.48275598E-02;
C3	1.23775879E+02;