Schott BaK 50, 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 9.501051e-001
C1 5.203570e-003
B2 4.693790e-001
C2 1.878886e-002
B3 9.214159e-001
C3 9.840797e+001