Optical constants (n, k) of Cu, covering 0.00 – 1.24 μm wavelength range.
| Wavelength (μm) | n | k |
|---|---|---|
| 0.0000 | 1.00000 | 0.00000 |
| 0.0001 | 1.00100 | 0.00000 |
| 0.0003 | 1.00000 | 0.00001 |
| 0.0010 | 0.99900 | 0.00062 |
| 0.0014 | 1.00000 | 0.00017 |
| 0.0021 | 0.99700 | 0.00065 |
| 0.0041 | 0.98800 | 0.00513 |
| 0.0103 | 0.96500 | 0.05400 |
| 0.0124 | 0.96700 | 0.06530 |
| 0.0138 | 0.96300 | 0.07880 |
| 0.0148 | 0.96900 | 0.09110 |
| 0.0153 | 0.97400 | 0.09430 |
| 0.0159 | 0.98000 | 0.09360 |
| 0.0165 | 0.98300 | 0.08720 |
| 0.0172 | 0.97500 | 0.08680 |
| 0.0180 | 0.97000 | 0.09080 |
| 0.0188 | 0.96700 | 0.09630 |
| 0.0197 | 0.96500 | 0.10400 |
| 0.0207 | 0.96600 | 0.10900 |
| 0.0217 | 0.96200 | 0.11200 |
| 0.0230 | 0.95700 | 0.12000 |
| 0.0243 | 0.95300 | 0.13000 |
| 0.0258 | 0.95200 | 0.14000 |
| 0.0276 | 0.94900 | 0.14800 |
| 0.0295 | 0.94200 | 0.15700 |
| 0.0318 | 0.93000 | 0.17400 |
| 0.0344 | 0.92200 | 0.19300 |
| 0.0376 | 0.90100 | 0.21400 |
| 0.0413 | 0.85600 | 0.26200 |
| 0.0459 | 0.88400 | 0.38200 |
| 0.0517 | 0.96100 | 0.37300 |
| 0.0590 | 0.89700 | 0.41100 |
| 0.0689 | 0.89000 | 0.56100 |
| 0.0800 | 0.98100 | 0.69500 |
| 0.0886 | 1.05500 | 0.72400 |
| 0.1127 | 1.07400 | 0.75400 |
| 0.1378 | 1.02700 | 0.92100 |
| 0.1653 | 1.00500 | 1.09000 |
| 0.2066 | 1.03600 | 1.59000 |
| 0.2296 | 1.27600 | 1.78000 |
| 0.2583 | 1.53300 | 1.71000 |
| 0.2952 | 1.41900 | 1.64000 |
| 0.3444 | 1.31000 | 1.87000 |
| 0.4133 | 1.18400 | 2.21000 |
| 0.5166 | 1.12100 | 2.60000 |
| 0.5904 | 0.46800 | 2.81000 |
| 0.6702 | 0.21500 | 3.86000 |
| 0.7293 | 0.22300 | 4.43000 |
| 1.2400 | 0.43300 | 8.46000 |
Sampled data (144 points total). Click "Download Full CSV" for complete data.
Acuitik film thickness measurement systems offer sub-nanometer non-contact precision.