--- /dev/null
+User-defined Material (Sellmeier for n, Urbach for k)\r
+USER\r
+0 1\r
+(An+Bn*Wvl^2/(Wvl^2-Cn^2)+Dn*Wvl^2/(Wvl^2-En^2))^0.5\r
+Fn*Wvl*exp(-Gn*(1/Hn-1/Wvl))\r
+An 3.563600\r
+Bn 0.000000\r
+Cn 0.000000\r
+Dn 0.457663\r
+En 2738.260812\r
+Fn 0.000179\r
+Gn 22573.493061\r
+Hn 2279.947815\r