--- /dev/null
+Schott LaK 31, 334nm - 2325nm\r
+USER\r
+2 1\r
+SQRT(1+B1*wvl^2/(wvl^2-C1)+B2*wvl^2/(wvl^2-C2)+B3*wvl^2/(wvl^2-C3))\r
+0\r
+B1 1.41824715E+00;\r
+B2 4.09404103E-01;\r
+B3 1.15432487E+00;\r
+C1 6.79114675E-03;\r
+C2 2.19284910E-02;\r
+C3 8.03980528E+01;
\ No newline at end of file