Schott LaSF N30, 334nm - 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	1.78301085E+00;
B2	3.88968359E-01;
B3	1.30150440E+00;
C1	8.72506277E-03;
C2	3.08085023E-02;
C3	9.27743824E+01;