--- /dev/null
+Chromium optical constants, D. W. Lynch and W. R. Hunter, Palik vol. II\r
+nm\r
+nk\r
+248.0 0.85 2.01\r
+253.0 0.86 2.07\r
+258.3 0.86 2.13\r
+263.8 0.86 2.21\r
+269.5 0.88 2.28\r
+275.5 0.89 2.35\r
+281.8 0.90 2.42\r
+287.0 0.91 2.49\r
+293.8 0.94 2.58\r
+300.2 0.98 2.67\r
+307.7 1.02 2.76\r
+316.3 1.06 2.85\r
+323.7 1.12 2.95\r
+333.3 1.18 3.04\r
+341.6 1.26 3.12\r
+351.2 1.33 3.18\r
+362.5 1.39 3.24\r
+372.3 1.43 3.31\r
+385.0 1.44 3.40\r
+396.1 1.48 3.54\r
+409.2 1.54 3.71\r
+424.6 1.65 3.89\r
+438.1 1.80 4.06\r
+455.8 1.99 4.22\r
+471.4 2.22 4.36\r
+490.1 2.49 4.44\r
+512.3 2.75 4.46\r
+532.1 2.98 4.45\r
+558.5 3.18 4.41\r
+582.1 3.34 4.38\r
+610.8 3.48 4.36\r
+700.5 3.84 4.37\r
+815.7 4.23 4.34\r
+826.6 4.27 4.33\r
+849.2 4.31 4.32\r
+861.0 4.33 4.32\r
+885.6 4.38 4.31\r
+911.6 4.42 4.30\r
+939.3 4.47 4.29\r
+968.6 4.49 4.28\r
+999.9 4.50 4.28\r
+1033 4.52 4.29\r
+1069 4.53 4.30\r
+1107 4.53 4.31\r
+1148 4.53 4.34\r
+1192 4.51 4.36\r
+1240 4.47 4.43\r
+1292 4.47 4.50\r
+1348 4.45 4.56\r
+1378 4.43 4.60\r
+1442 4.35 4.66\r
+1512 4.24 4.81\r
+1590 4.13 5.03\r
+1675 4.06 5.30\r
+1771 4.01 5.59\r